CN109425293A - A kind of Ball Screw Error Measurement system - Google Patents
A kind of Ball Screw Error Measurement system Download PDFInfo
- Publication number
- CN109425293A CN109425293A CN201710760043.3A CN201710760043A CN109425293A CN 109425293 A CN109425293 A CN 109425293A CN 201710760043 A CN201710760043 A CN 201710760043A CN 109425293 A CN109425293 A CN 109425293A
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- Prior art keywords
- ball
- screw
- double
- input terminal
- error measurement
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
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- General Physics & Mathematics (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses a kind of Ball Screw Error Measurement systems, circular grating and grating signal reader including ball-screw end is arranged in, feed screw nut side on ball-screw is fixed with the index glass of interferometer, double-frequency laser interference device, index glass described in the double-frequency laser interference device face are equipped in the ball-screw side；The grating signal reader connects photo-coupler, the input terminal of the photo-coupler connection frequency dividing circuit, the input terminal of the output end connection analog-digital converter of the frequency dividing circuit, the input terminal of the output end connection single-chip microcontroller of the analog-digital converter, the single-chip microcontroller connect the double-frequency laser interference device and memory.Frequency dividing circuit is used to synchronize reality according to the sampling period of setting using timing, avoids the problem that ball-screw since velocity of rotation variation causes sampling instant to change, ensure that the accuracy of ball screw error-detecting.
Description
Technical field
The present invention relates to a kind of Ball Screw Error Measurement systems.
Background technique
Ball-screw is actuated element most-often used on machine tool and precision machinery, and major function is will to rotate fortune
Turn changes linear movement into, or torque is converted into axial repeated action power, while having both high-precision, invertibity and efficient
Feature.Due to the frictional resistance with very little, ball-screw is widely used in various industrial equipments and precision instrument.
Ball-screw is made of screw rod, nut, steel ball, pre- tabletting, reverser, dust excluder.Ball-screw bearing is to adapt to
Various uses provides the miscellaneous product of standardization.It is widely used in lathe, the endless form of ball has circulation conduit
Formula, circulator formula, end cover type.Precompressed mode has positioning precompressed, level pressure precompressed.Appropriate type can be selected depending on the application.Screw rod has
The precision ball screw of high-precision attrition process and cold rolling ball-screw bearing through High Precision Cold machine-shaping.
There are two types of common endless form: outer circulation and interior circulation.Ball connects with lead screw disengaging sometimes in cyclic process
Touching is known as outer circulation；Always what is be kept in contact with lead screw is known as interior circulation.Each circulation of ball is closed circuit to be known as arranging, each rolling
The closed circuit interior contained lead number of pearl circulation is known as enclosing number.Each nut of interior circular rolling ball screw pair has 2 column, 3 column, 4 column, 5 column etc.
Several, each column only has a circle；It is several that 1.5 circles, 2.5 circles and 3.5 circles etc. are often shown in outer circulation.
1) outer circulation: outer circulation is that ball is returned after cyclic process by the helicla flute of nut outer surfaces or intubation
Circulation is reentered between feed screw nut.Echo plex mode when outer circulation ball guide screw nat is by ball-recirculation mainly has end cap
Formula, cannula type and spiral groove type.Common outer circulation mode end cover type；Cannula type；Spiral groove type.End cover type is processed on nut
One longitudinal hole is provided with the backhaul mouth of ball as the return pass of ball on the cover board at nut both ends, thus ball enters backhaul
Pipe forms circulation.Cannula type, it uses bend pipe as return duct, and this processability of product structure is good, but due to the prominent nut of pipeline
In vitro, radial dimension is larger.Spiral groove type, it is that helicla flute is milled out in nut outer circle, and the both ends of slot drill out through-hole and and spiral shell
Line raceway is tangent, forms backward channel, and this structure is smaller than cannula type structure radial dimension, but manufactures more complex.Outer circulation rolling
Ballscrew outer circulation structure and manufacturing process are simple, using extensive.The disadvantage is that raceway seam crossing is difficult to be made smooth, influence to roll
The stationarity of pearl raceway.
2) circulation in: interior circulation is all made of reverser and realizes ball-recirculation, and there are two types of types for reverser.Cylinder convex key is reversed
Device, in its column part inserted num, end is provided with opposing slot.Round key of the opposing slot by cylinder periphery and the upper end is fixed
Position, to guarantee to be directed at screw thread direction.Oblate insert reverser, reverser are general round end flat key insert, and insert is embedded in spiral shell
In female grooving, end is provided with opposing slot, is positioned with the outer profile of insert.Two kinds of reversers compare, and latter dimensions are smaller, from
And it reduces the radial dimension of nut and shortens axial dimension.But the grooving size on the outer profile and nut of this reverser
Required precision is higher.
Summary of the invention
Goal of the invention: being directed to the above-mentioned prior art, proposes a kind of Ball Screw Error Measurement system, realizes that ball screw misses
The accurate detection of difference.
A kind of technical solution: Ball Screw Error Measurement system, it is characterised in that: including ball-screw end is arranged in
Circular grating and grating signal reader, the feed screw nut side on ball-screw is fixed with the index glass of interferometer, in institute
It states ball-screw side and is equipped with double-frequency laser interference device, index glass described in the double-frequency laser interference device face；The grating signal
Reader connects photo-coupler, the input terminal of the photo-coupler connection frequency dividing circuit, the output end connection of the frequency dividing circuit
The input terminal of analog-digital converter, the input terminal of the output end connection single-chip microcontroller of the analog-digital converter, the single-chip microcontroller connect institute
State double-frequency laser interference device and memory.
Further, the circular grating is connect by bearing with the ball-screw end.
Further, socket ring with one heart is connected on the outside of the feed screw nut, the socket ring and the feed screw nut are solid
Fixed connection, the index glass are fixedly embedded on the end face of the socket ring.
Further, the other end of the ball-screw is equipped with the driving structure for driving lead screw to rotate, the driving
Structure includes ultrasound electric machine.
The utility model has the advantages that a kind of Ball Screw Error Measurement system of the invention, pass through double-frequency laser interference device, interferometer
The cooperating of index glass, circular grating and grating signal reader passes through circular grating when being able to detect ball screw turns
The pulse signal of formation, the pulse signal are linked into frequency dividing circuit by photo-coupler, and frequency dividing circuit is used for adopting according to setting
Sample cycle synchronisation is practical to use timing, and ball-screw is avoided to cause sampling instant is changed to ask due to velocity of rotation variation
Topic.When reaching setting value, i.e., when detecting ball screw turns to certain angle by circular grating, output signal is converted
After input single-chip microcontroller, which is capable of the work of accurately synchronous double-frequency Laser interference device, ensure that ball screw error is examined
The accuracy of survey.
Specific embodiment
Further explanation is done to the present invention below.
A kind of Ball Screw Error Measurement system, circular grating and grating signal including ball-screw end is arranged in
Reader, the feed screw nut side on ball-screw are fixed with the index glass of interferometer, swash in ball-screw side equipped with double frequency
Optical interferometer, index glass described in double-frequency laser interference device face.Grating signal reader connects photo-coupler, photo-coupler connection point
The input terminal of frequency circuit, the input terminal of the output end connection analog-digital converter of frequency dividing circuit, the output end connection of analog-digital converter
The input terminal of single-chip microcontroller, single-chip microcontroller connect the double-frequency laser interference device and memory.
Further, circular grating is connect by bearing with the ball-screw end.It is connected on the outside of feed screw nut same
The heart is socketed ring, and socket ring is fixedly connected with the feed screw nut, and index glass is fixedly embedded on the end face of the socket ring.Ball wire
The other end of thick stick is equipped with the driving structure for driving lead screw to rotate, and the driving structure includes ultrasound electric machine.
A kind of above-mentioned Ball Screw Error Measurement system, passes through double-frequency laser interference device, the index glass of interferometer, circular grating
And the cooperating of grating signal reader, believed when being able to detect ball screw turns by the pulse that circular grating is formed
Number, which is linked into frequency dividing circuit by photo-coupler, and frequency dividing circuit is used to synchronize reality according to the sampling period of setting
Border uses timing, avoids the problem that ball-screw causes sampling instant to change due to velocity of rotation variation.It is set when reaching
When value, i.e., when detecting ball screw turns to certain angle by circular grating, single-chip microcontroller is inputted after output signal is converted,
The single-chip microcontroller is capable of the work of accurate synchronous double-frequency Laser interference device, and in real time saves count value in memory, guarantees
The accuracy of ball screw error-detecting.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (4)
1. a kind of Ball Screw Error Measurement system, it is characterised in that: including be arranged in the circular grating of ball-screw end with
And grating signal reader, the feed screw nut side on ball-screw is fixed with the index glass of interferometer, in the ball-screw
Side is equipped with double-frequency laser interference device, index glass described in the double-frequency laser interference device face；The grating signal reader connection
Photo-coupler, the input terminal of the photo-coupler connection frequency dividing circuit, the output end of the frequency dividing circuit connect analog-digital converter
Input terminal, the input terminal of the output end connection single-chip microcontroller of the analog-digital converter, the single-chip microcontroller connects the double-frequency laser
Interferometer and memory.
2. a kind of Ball Screw Error Measurement system according to claim 1, it is characterised in that: the circular grating passes through
Bearing is connect with the ball-screw end.
3. a kind of Ball Screw Error Measurement system according to claim 1, it is characterised in that: on the outside of the feed screw nut
It is connected with socket ring, the socket ring with one heart to be fixedly connected with the feed screw nut, the index glass is fixedly embedded in the socket
On the end face of ring.
4. a kind of Ball Screw Error Measurement system according to claim 1, it is characterised in that: the ball-screw it is another
One end is equipped with the driving structure for driving lead screw to rotate, and the driving structure includes ultrasound electric machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710760043.3A CN109425293A (en) | 2017-08-30 | 2017-08-30 | A kind of Ball Screw Error Measurement system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710760043.3A CN109425293A (en) | 2017-08-30 | 2017-08-30 | A kind of Ball Screw Error Measurement system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109425293A true CN109425293A (en) | 2019-03-05 |
Family
ID=65502082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710760043.3A Pending CN109425293A (en) | 2017-08-30 | 2017-08-30 | A kind of Ball Screw Error Measurement system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109425293A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2152200Y (en) * | 1993-01-18 | 1994-01-05 | 朱家璈 | Measuring mechanism for combined laser guide screw measuring instrument |
| CN200979415Y (en) * | 2006-12-07 | 2007-11-21 | 山东济宁博特精密丝杠有限公司 | A speed adaptive device for ball screw error measurement |
| CN101907441A (en) * | 2009-06-03 | 2010-12-08 | 上海莱恩精密机床附件有限公司 | Laser pitchometer for ball-screw and measuring method thereof |
-
2017
- 2017-08-30 CN CN201710760043.3A patent/CN109425293A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2152200Y (en) * | 1993-01-18 | 1994-01-05 | 朱家璈 | Measuring mechanism for combined laser guide screw measuring instrument |
| CN200979415Y (en) * | 2006-12-07 | 2007-11-21 | 山东济宁博特精密丝杠有限公司 | A speed adaptive device for ball screw error measurement |
| CN101907441A (en) * | 2009-06-03 | 2010-12-08 | 上海莱恩精密机床附件有限公司 | Laser pitchometer for ball-screw and measuring method thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190305 |