CN203501983U - Detection apparatus for stroke deviation and stroke variation of nut driving ball screw assembly - Google Patents
Detection apparatus for stroke deviation and stroke variation of nut driving ball screw assembly Download PDFInfo
- Publication number
- CN203501983U CN203501983U CN201320659009.4U CN201320659009U CN203501983U CN 203501983 U CN203501983 U CN 203501983U CN 201320659009 U CN201320659009 U CN 201320659009U CN 203501983 U CN203501983 U CN 203501983U
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- nut
- stroke
- ball screw
- screw assembly
- nut driving
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- Expired - Lifetime
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- 238000001514 detection method Methods 0.000 title abstract description 6
- 230000000694 effects Effects 0.000 claims abstract description 3
- 238000005259 measurement Methods 0.000 claims description 14
- 230000003287 optical effect Effects 0.000 abstract 2
- 230000003068 static effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- Length Measuring Devices By Optical Means (AREA)
Abstract
The utility model relates to the nut driving ball screw assembly field, especially to a detection apparatus for stroke deviation and stroke variation of a nut driving ball screw assembly. The detection apparatus comprises an optical stroke measuring apparatus and an angle measuring apparatus. The nut driving ball screw assembly includes a nut driving combination unit, a lead screw, a pair of fixed clamping devices, a working stand and a base; the lead screw is fixedly arranged at the base by the fixed clamping devices; the nut driving combination unit is sleeved at the lead screw; and the working stand and the nut driving combination unit are connected by combination. When rotating around the lead screw under the effect of an external driving mechanism, the nut driving combination unit drives the working stand to make linear movement along the main shaft direction of the lead screw. The angle measuring apparatus is fixedly arranged at the nut driving combination unit and is used for measuring the angle of the rotation of the nut driving combination unit around the lead screw; and the optical stroke measuring apparatus that is fixedly arranged at the fixed clamping devices and is opposite to the working stand is used for measuring the distance of the linear movement of the working stand along the main shaft of the lead screw.
Description
Technical field
The present invention relates to the driving ball screw assembly, of nut field, is especially the pick-up unit of the driving ball screw assembly, deviation of stroke of a kind of nut and stroke variation.
Background technology
Now widely used traditional ball screw assembly, is to be driven by leading screw, drives nut to do rectilinear motion (hereinafter to be referred as the driving ball screw assembly, of leading screw).In order to solve the large problem of large-scale ball-screw moment of inertia, the increasing driving ball screw assembly, of nut is used, and the ball screw assembly, of the type has the advantages that inertia is low, rigidity is high, and design and installation is simple.
But, for the detection of the stroke accuracy of the driving ball screw assembly, of nut, there is no at home relevant criterion and method, and according to the examination criteria of the driving ball screw assembly, of leading screw, to detect be obviously science and inaccurate not.
Summary of the invention
The object of the invention is to solve the deviation of stroke of the driving ball screw assembly, of nut and the test problems of stroke variation, and the pick-up unit of the driving ball screw assembly, deviation of stroke of a kind of nut and stroke variation is provided, and specifically by following technical scheme, is realized.
The pick-up unit of the driving ball screw assembly, deviation of stroke of a kind of nut and stroke variation, be connected with the driving ball screw assembly, of nut, comprise optics stroke measuring device and angle measurement unit, the driving ball screw assembly, of described nut comprises that nut drives combination, leading screw, a pair of fixed clamping device, worktable and support, described leading screw is fixedly installed on support by fixed clamping device, described nut drives combination to be set on leading screw, described worktable and nut drive and are connected, described nut drives under the effect that is combined in external drive mechanism when wrapping wire thick stick rotates and drives worktable along the major axes orientation traveling priority of leading screw, described angle measurement unit is fixedly installed on described nut driver element, the angle that drives combination wrapping wire thick stick to rotate in order to measure nut, described optics stroke measuring device is fixedly installed on fixed clamping device and is relative with described worktable, the distance in order to surveying work platform along leading screw main shaft traveling priority.
The deviation of stroke of the described driving ball screw assembly, of nut and the pick-up unit of stroke variation, it further designs and is that described angle measurement unit is for accurate circle grating or magnetic grid, and described optics stroke measuring device is two-frequency laser interferometer or grating.
The present invention can truly reflect the type lead screw pair whole system stroke accuracy of (comprising bearing, sealing etc.), facilitates the actual use of user.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is A-A view profile shown in Fig. 1.
Embodiment
Below in conjunction with Figure of description and specific embodiment, the present invention is further described.
The pick-up unit of the driving ball screw assembly, deviation of stroke of this nut and stroke variation is connected with the driving ball screw assembly, of nut, comprise optics stroke measuring device 1 and angle measurement unit 2, the driving ball screw assembly, 3 of nut comprises that nut drives combination 31, leading screw 32, a pair of fixed clamping device 33, worktable 34 and support 35, leading screw 32 is fixedly installed on support by fixed clamping device 33, nut drives combination 31 to be set on leading screw 32, worktable 34 drives combination 31 to be connected with nut, nut drives combination 31 wrapping wire thick stick 32 under motor 36 drives to drive worktable 34 along the major axes orientation traveling priority of leading screw 32 when rotating, angle measurement unit 2 is fixedly installed on nut and drives in combination 31, the angle that drives combination 31 wrapping wire thick sticks 32 to rotate in order to measure nut, optics stroke measuring device 1 is fixedly installed on fixed clamping device 33 and is relative with worktable 34, the distance in order to surveying work platform along leading screw main shaft traveling priority.Angle measurement unit is accurate circle grating or magnetic grid, and optics stroke measuring device is two-frequency laser interferometer or grating.
The present invention can carry out dynamically and static measurement the stroke accuracy measurement of the driving ball screw assembly, of nut, and concrete grammar is as follows.
1,
detection of dynamic
Starter motor drives nut to drive combination rotation by Timing Belt, thereby drives worktable to do rectilinear motion, and the data synchronization processing that optics stroke measuring device and angle measurement unit are obtained, just can show that this nut drives the dynamic helical pitch precision combining.
2, Static Detection
Starter motor drives nut to drive combination rotation by Timing Belt, thereby drive worktable to do rectilinear motion, by control system and angle measurement unit, accurately controlling nut rotates to an angle, then by optics stroke measuring device, obtain stroke variation, thus helical pitch precision that can each helical pitch of static measurement.
The present invention can truly reflect the type lead screw pair whole system stroke accuracy of (comprising bearing, sealing etc.), facilitates the actual use of user.
Claims (2)
1. the pick-up unit of the driving ball screw assembly, deviation of stroke of nut and stroke variation, be connected with the driving ball screw assembly, of nut, it is characterized in that comprising optics stroke measuring device and angle measurement unit, the driving ball screw assembly, of described nut comprises that nut drives combination, leading screw, a pair of fixed clamping device, worktable and support, described leading screw is fixedly installed on support by fixed clamping device, described nut drives combination to be set on leading screw, described worktable and nut drive and are connected, described nut drives under the effect that is combined in external drive mechanism when wrapping wire thick stick rotates and drives worktable along the major axes orientation traveling priority of leading screw, described angle measurement unit is fixedly installed on described nut driver element, the angle that drives combination wrapping wire thick stick to rotate in order to measure nut, described optics stroke measuring device is fixedly installed on fixed clamping device and is relative with described worktable, the distance in order to surveying work platform along leading screw main shaft traveling priority.
2. the deviation of stroke of the driving ball screw assembly, of nut according to claim 1 and the pick-up unit of stroke variation, it is characterized in that described angle measurement unit is for accurate circle grating or magnetic grid, described optics stroke measuring device is two-frequency laser interferometer or grating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320659009.4U CN203501983U (en) | 2013-10-24 | 2013-10-24 | Detection apparatus for stroke deviation and stroke variation of nut driving ball screw assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320659009.4U CN203501983U (en) | 2013-10-24 | 2013-10-24 | Detection apparatus for stroke deviation and stroke variation of nut driving ball screw assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203501983U true CN203501983U (en) | 2014-03-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320659009.4U Expired - Lifetime CN203501983U (en) | 2013-10-24 | 2013-10-24 | Detection apparatus for stroke deviation and stroke variation of nut driving ball screw assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203501983U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103528529A (en) * | 2013-10-24 | 2014-01-22 | 南京工艺装备制造有限公司 | Detection device of stroke deviation and stroke variation of nut-driven ball screw pair |
-
2013
- 2013-10-24 CN CN201320659009.4U patent/CN203501983U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103528529A (en) * | 2013-10-24 | 2014-01-22 | 南京工艺装备制造有限公司 | Detection device of stroke deviation and stroke variation of nut-driven ball screw pair |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140326 |
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| CX01 | Expiry of patent term |