CN109443761A - A kind of ball screw assembly, test platform loading device - Google Patents
A kind of ball screw assembly, test platform loading device Download PDFInfo
- Publication number
- CN109443761A CN109443761A CN201811582791.8A CN201811582791A CN109443761A CN 109443761 A CN109443761 A CN 109443761A CN 201811582791 A CN201811582791 A CN 201811582791A CN 109443761 A CN109443761 A CN 109443761A
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- China
- Prior art keywords
- ball screw
- screw assembly
- shaped
- mounting bracket
- carrying disk
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- 238000012360 testing method Methods 0.000 title claims abstract description 27
- 229920002635 polyurethane Polymers 0.000 claims abstract description 15
- 239000004814 polyurethane Substances 0.000 claims abstract description 15
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000003351 stiffener Substances 0.000 claims description 3
- 239000006247 magnetic powder Substances 0.000 description 8
- 238000001816 cooling Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- -1 poly- ammonia Ester Chemical class 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/025—Test-benches with rotational drive means and loading means; Load or drive simulation
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The present invention relates to a kind of ball screw assembly, test platform loading devices, belong to ball screw assembly, technical field, it include: wheel shaft, pinch roller, U-shaped mounting bracket, loading disc, hexagon-headed bolt, force snesor, polyurethane spring, U-shaped load support, self-aligning roller bearing, idler wheel pressing plate, carrying disk, ball screw assembly, guide rail, sliding block and pedestal, the threaded rod of ball screw assembly, is fixed on the base end face by bearing block, ball screw assembly, two sides are provided with guide rail, the screw of ball screw assembly, is connected with carrying disk lower end surface, there are two sliding blocks for the setting of carrying disk lower end surface, sliding block is used cooperatively with guide rail, carrying disk upper surface side is provided with idler wheel pressing plate.The configuration of the present invention is simple, it is easy to accomplish, frictional force is converted by the pressure that bolt applies, it is versatile to being converted into the axial force being applied on ball screw assembly, suitable for structure from loading axis in need to power, load is stablized, and after stablizing load, axial force can be kept constant.
Description
Technical field
The present invention relates to ball screw assembly, technical field more particularly to a kind of ball screw assembly, test platform loading devices.
Background technique
Ball screw assembly, is the core component of CNC feeding transmission system, and performance directly affects the precision of numerically-controlled machine tool,
So domestic and foreign scholars study its property retention and deterioration law by test method.Currently, often passing through following three kinds
Mode is axially loaded to lead screw pair progress, to simulate application of the lead screw pair in actual condition.Scheme one: weight block load.It should
Weight block is fixed on workbench by scheme using bolt, and center is corresponding with guide rail, guarantees the gravity master of weight block
It to be undertaken by guide rail, thus, so that generating larger frictional force between sliding block and guide rail.Finally, by the frictional force and weight itself
Inertia force be converted into the axial force of lead screw pair；Scheme two: magnetic powder brake load.Magnetic powder brake is fixed on examination by the program
It tests on platform, magnetic powder brake shaft installs gear, workbench installs rack gear.In test, the torque of magnetic powder brake output passes through
The mode of rack and pinion engagement is converted into the axial force of lead screw pair；Scheme three: electric eddy current brake adds lead screw to load.The program exists
It tests lead screw two sides and arranges two load lead screws, load lead screw both ends are connect with electric eddy current brake.When electric eddy current brake work
When making, the torque of output drives load lead screw pair screw rod rotation, and workbench is made to generate movement tendency, for test lead screw load.
In scheme one, for weight block quality usually at one ton or so, installation is inconvenient, and can only realize that step-by-step movement loads, no
Sequence is able to achieve into load；
In scheme two, magnetic powder brake must be configured with water-cooling system or air cooling system in use, so that magnetic powder
Brake temperature is in the reasonable scope.More complete water-cooling system or air cooling system has higher requirements to the configuration of laboratory.And
In magnetic powder brake, magnetic powder is consumables, needs to regularly replace, and will affect the integrated planning of test to a certain extent.
In scheme three, by load lead screw to test lead screw load axial force, if test during load lead screw prior to
It tests lead screw and performance degradation occurs, it is unstable to will lead to axial force added by test lead screw.It meanwhile during loading, can be to quilt
It surveys lead screw and generates torque, and then influence the correlative study to test lead screw.Structure is complicated, higher cost for the program again, and right
The installation accuracy of load lead screw, workbench etc. has higher requirement.
Summary of the invention
Existing weighted platform installation is inconvenient, laboratory configuration is high and tests axis added by lead screw in order to solve by the present invention
The problem unstable to power, and then a kind of ball screw assembly, test platform loading device is provided, light weight is simple, is easily assembled,
Laboratory configuration needs are low, can provide steady axial load to lead screw pair, and can realize Arbitrary Loads size.
Inventive technique scheme:
A kind of ball screw assembly, test platform loading device, comprising: wheel shaft, pinch roller, U-shaped mounting bracket, loading disc, pressure
Threaded post, pressure sensor, polyurethane spring, U-shaped load support, idler wheel pressing plate, carrying disk, ball screw assembly, guide rail, sliding block
And pedestal,
The threaded rod of the ball screw assembly, is fixed on the base end face by bearing block, and ball screw assembly, two sides are provided with
The screw of guide rail, ball screw assembly, is connected with carrying disk lower end surface, and there are two sliding block, sliding block and guide rails for the setting of carrying disk lower end surface
It is used cooperatively；
Carrying disk upper surface side is provided with idler wheel pressing plate；
Pedestal upper surface side is provided with U-shaped mounting bracket, and U-shaped mounting bracket upper end is provided with threaded hole, described U-shaped
Two pairs of locating pieces being parallel to each other are provided with before and after mounting bracket inner sidewall, U-shaped load branch is provided in U-shaped mounting bracket
Seat, U-shaped load support are inlaid in locating piece and slide up and down in U-shaped mounting bracket, and pinch roller is by wheel shaft with setting U-shaped
The self-aligning roller bearing for loading support inner wall is connected, and U-shaped load support upper surface is provided with polyurethane spring, on polyurethane spring
End face is provided with loading disc, and loading disc upper surface is provided with pressure sensor, and pressure threaded post passes through U-shaped mounting bracket upper end
Threaded hole presses to pressure sensor.
Further, the U-shaped mounting bracket lateral wall is provided with stiffener plate.
Further, the U-shaped mounting bracket inner wall and U-shaped load support outer wall are provided with the gap of 0.01mm.
Further, the pinch roller outer surface and idler wheel pressing plate upper surface are provided with wearing layer.
Further, the polyurethane spring, loading disc, pressure sensor are coaxially set in U-shaped load support upper surface
Above centre bit.
The present invention has the advantages that the prior art
The configuration of the present invention is simple, it is easy to accomplish, frictional force is converted by the pressure that bolt applies, to be converted into application
Axial force on ball screw assembly,.
The present invention it is versatile, suitable for structure from loading axis in need to power.
The present invention, which loads, to be stablized, and after stablizing load, axial force can be kept constant.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is locating piece schematic view of the mounting position of the present invention.
Specific embodiment
Below with reference to attached drawing, the present invention is described in detail.
Embodiment one: a kind of ball screw assembly, test platform loading device, comprising: wheel shaft 1, pinch roller 2, U-shaped mounting bracket
3, loading disc 4, pressure threaded post 5, pressure sensor 6, polyurethane spring 7, U-shaped load support 8, idler wheel pressing plate 10, carrying disk
11, ball screw assembly, 12, guide rail 13, sliding block 14 and pedestal 15,
The threaded rod of the ball screw assembly, 12 is fixed on 15 upper surface of pedestal, 12 two sides of ball screw assembly, by bearing block
It is provided with guide rail 13, the screw of ball screw assembly, 12 is connected with 11 lower end surface of carrying disk, and there are two the settings of 11 lower end surface of carrying disk
Sliding block 14, sliding block 14 are used cooperatively with guide rail 13；
The 11 upper surface side of carrying disk is provided with idler wheel pressing plate 10；
The 15 upper surface side of pedestal is provided with U-shaped mounting bracket 3, and U-shaped 3 upper end of mounting bracket is provided with threaded hole, institute
It states U-shaped 3 inner sidewall of mounting bracket front and back and is provided with two pairs of locating pieces being parallel to each other 16, be provided with U in U-shaped mounting bracket 3
Type loads support 8, and U-shaped load support 8 is inlaid in locating piece 16 and slides up and down in U-shaped mounting bracket 3, and pinch roller 2 passes through
Wheel shaft 1 is connected with the self-aligning roller bearing that U-shaped load 8 inner wall of support is arranged in, and U-shaped 8 upper surface of load support is provided with poly- ammonia
Ester spring 7,7 upper surface of polyurethane spring are provided with loading disc 4, and 4 upper surface of loading disc is provided with pressure sensor 6, and press spiral shell
The threaded hole that line column 5 passes through U-shaped 3 upper end of mounting bracket presses to pressure sensor 6, and loading disc 4 and polyurethane bullet is arranged such
, it can be achieved that being evenly distributed in the upper surface load to U-shaped load support 8, polyurethane spring 7 can be absorbed due to examination spring 7 in a certain range
The load fluctuation testing the local out-of-flatness of carrying disk 11 and generating, ensures the stability of 12 axial load of ball screw assembly, indirectly,
Pressure sensor 6 can real-time monitoring hexagon-headed bolt 5 pressure value, it is ensured that the stabilization of input load is given by hexagon-headed bolt 5
Pinch roller 2 applies pressure, and the axial load of lead screw pair is converted the pressure to by friction.
Embodiment two: U-shaped 3 lateral wall of mounting bracket is provided with stiffener plate 17, so set, ensure that U-shaped peace
The intensity of dress bracket 3 prevents from deforming.
Embodiment three: U-shaped 3 inner wall of mounting bracket and the U-shaped gap for loading 8 outer wall of support and being provided with 0.01mm, such as
This setting, guarantees that U-shaped mounting bracket 3 only has vertical deviation in the course of work, so can guarantee that pinch roller 2 is uniformly distributed add to workbench
It carries.
Example IV: institute 2 outer surface of pinch roller and 10 upper surface of idler wheel pressing plate are provided with wearing layer, so set,
Ensured in long period test with this, which will not occur to influence the abrasion of test effect.
The output end of servo motor is connected with the lead screw of ball screw assembly, 12；
Embodiment five: the polyurethane spring 7, loading disc 4, pressure sensor 6 are coaxially set in U-shaped load support 8
Above the centre bit of upper surface.
Working principle:
Firstly, hexagon-headed bolt 5, which is tightened, applies positive pressure to pressure sensor 6, and pressure is passed sequentially through into polyurethane
Spring 7, U-shaped load support 8, wheel shaft 1 pass to pinch roller 2, drive the lead screw of ball screw assembly, 12 to work when servo motor rotates
When, the feed screw nut Axially moving belt of ball screw assembly, 12 moves carrying disk 11, idler wheel pressing plate 10 moves, pinch roller 2 and idler wheel pressing plate
Relative movement is generated between 10.At this point, pinch roller 2 generates frictional force to idler wheel pressing plate 10 under compression effect, it is converted into ball wire
The axial force of thick stick pair.Hexagon-headed bolt 5 is first pre-tightened, in combination with the torque feedback of servo motor, bolt 5 is pre-tightened and is carried out in real time
Adjustment records the pressure value of pressure sensor 6, and periodic observation when reaching test requirements, carries out to pressure value micro- in real time
It adjusts, guarantees stability.
Claims (5)
1. a kind of ball screw assembly, test platform loading device, comprising: wheel shaft (1), pinch roller (2), U-shaped mounting bracket (3), load
Disk (4), pressure threaded post (5), pressure sensor (6), polyurethane spring (7), U-shaped load support (8), idler wheel pressing plate (10),
Carrying disk (11), ball screw assembly, (12), guide rail (13), sliding block (14) and pedestal (15), which is characterized in that
The threaded rod of the ball screw assembly, (12) is fixed on pedestal (15) upper surface, ball screw assembly, (12) two by bearing block
Side is provided with guide rail (13), and the screw of ball screw assembly, (12) is connected with carrying disk (11) lower end surface, carrying disk (11) lower end surface
There are two sliding block (14), sliding blocks (14) to be used cooperatively with guide rail (13) for setting；
Carrying disk (11) the upper surface side is provided with idler wheel pressing plate (10)；
Pedestal (15) the upper surface side is provided with U-shaped mounting bracket (3), and U-shaped mounting bracket (3) upper end is provided with threaded hole,
Two pairs of locating pieces being parallel to each other (16) are provided with before and after U-shaped mounting bracket (3) inner sidewall, U-shaped mounting bracket (3) is interior
It is provided with U-shaped load support (8), it is interior and upper and lower in U-shaped mounting bracket (3) that U-shaped load support (8) is inlaid in locating piece (16)
Sliding, self-aligning roller bearing of the pinch roller (2) by wheel shaft (1) with setting in U-shaped load support (8) inner wall are connected, U-shaped load branch
Seat (8) upper surface is provided with polyurethane spring (7), and polyurethane spring (7) upper surface is provided with loading disc (4), on loading disc (4)
End face is provided with pressure sensor (6), and pressure threaded post (5) passes through the threaded hole of U-shaped mounting bracket (3) upper end to pressure sensing
Device (6) pressure.
2. a kind of ball screw assembly, test platform loading device according to claim 1, which is characterized in that the U-shaped peace
Dress bracket (3) lateral wall is provided with stiffener plate (17).
3. a kind of ball screw assembly, test platform loading device according to claim 1, which is characterized in that the U-shaped peace
Dress bracket (3) inner wall and U-shaped load support (8) outer wall are provided with the gap of 0.01mm.
4. a kind of ball screw assembly, test platform loading device according to claim 1, which is characterized in that the pinch roller
(2) outer surface and idler wheel pressing plate (10) upper surface are provided with wearing layer.
5. a kind of ball screw assembly, test platform loading device according to claim 1, which is characterized in that the polyurethane
Spring (7), loading disc (4), pressure sensor (6) are coaxially set above the centre bit of U-shaped load support (8) upper surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811582791.8A CN109443761A (en) | 2018-12-24 | 2018-12-24 | A kind of ball screw assembly, test platform loading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811582791.8A CN109443761A (en) | 2018-12-24 | 2018-12-24 | A kind of ball screw assembly, test platform loading device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109443761A true CN109443761A (en) | 2019-03-08 |
Family
ID=65537875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811582791.8A Pending CN109443761A (en) | 2018-12-24 | 2018-12-24 | A kind of ball screw assembly, test platform loading device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109443761A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112649194A (en) * | 2021-01-11 | 2021-04-13 | 山东大学 | Ball screw pair loading test device and test method |
| CN113532854A (en) * | 2021-06-25 | 2021-10-22 | 北京机械设备研究所 | Axial loading testing device for ball screw pair |
| CN116067651A (en) * | 2023-03-07 | 2023-05-05 | 四川大学 | In-situ equivalent testing system and testing method for ball friction and movement |
Citations (5)
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| JP2004020520A (en) * | 2002-06-20 | 2004-01-22 | Nsk Ltd | Endurance testing apparatus for ball screw |
| JP2006017472A (en) * | 2004-06-30 | 2006-01-19 | Nsk Ltd | Ball screw endurance testing apparatus |
| CN103389205A (en) * | 2013-07-17 | 2013-11-13 | 西安交通大学 | Device for detecting comprehensive performance of ball screw assembly in loaded state |
| CN107436238A (en) * | 2017-06-30 | 2017-12-05 | 南京理工大学 | A kind of pinion and-rack ball screw assembly, loading device testing stand |
| CN108332966A (en) * | 2017-12-25 | 2018-07-27 | 兰州空间技术物理研究所 | A kind of space mechanism's ball screw assembly, vacuum test device |
-
2018
- 2018-12-24 CN CN201811582791.8A patent/CN109443761A/en active Pending
Patent Citations (5)
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|---|---|---|---|---|
| JP2004020520A (en) * | 2002-06-20 | 2004-01-22 | Nsk Ltd | Endurance testing apparatus for ball screw |
| JP2006017472A (en) * | 2004-06-30 | 2006-01-19 | Nsk Ltd | Ball screw endurance testing apparatus |
| CN103389205A (en) * | 2013-07-17 | 2013-11-13 | 西安交通大学 | Device for detecting comprehensive performance of ball screw assembly in loaded state |
| CN107436238A (en) * | 2017-06-30 | 2017-12-05 | 南京理工大学 | A kind of pinion and-rack ball screw assembly, loading device testing stand |
| CN108332966A (en) * | 2017-12-25 | 2018-07-27 | 兰州空间技术物理研究所 | A kind of space mechanism's ball screw assembly, vacuum test device |
Non-Patent Citations (1)
| Title |
|---|
| 徐凤翔;王禹林;冯虎田;: "滚珠丝杠副轴向静刚度卧式试验方案研究", 组合机床与自动化加工技术, no. 10 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112649194A (en) * | 2021-01-11 | 2021-04-13 | 山东大学 | Ball screw pair loading test device and test method |
| CN112649194B (en) * | 2021-01-11 | 2021-10-22 | 山东大学 | Ball screw pair loading test device and test method |
| CN113532854A (en) * | 2021-06-25 | 2021-10-22 | 北京机械设备研究所 | Axial loading testing device for ball screw pair |
| CN113532854B (en) * | 2021-06-25 | 2024-04-26 | 北京机械设备研究所 | Axial loading testing device for ball screw pair |
| CN116067651A (en) * | 2023-03-07 | 2023-05-05 | 四川大学 | In-situ equivalent testing system and testing method for ball friction and movement |
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Effective date of abandoning: 20240419 |