CN206550755U - A kind of on-line measurement device of contactless turner - Google Patents
A kind of on-line measurement device of contactless turner Download PDFInfo
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- CN206550755U CN206550755U CN201720214197.8U CN201720214197U CN206550755U CN 206550755 U CN206550755 U CN 206550755U CN 201720214197 U CN201720214197 U CN 201720214197U CN 206550755 U CN206550755 U CN 206550755U
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- workpiece
- displacement sensor
- contactless
- laser displacement
- main shaft
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Abstract
The utility model discloses a kind of on-line measurement device of contactless turner, including lathe, main shaft, workpiece is driven by chuck by main shaft to be rotated；Lathe is provided with the guide rail arranged in the first direction；Position adjusting mechanism sliding installation is in guide rail；Knife rest is slided in a second direction by position adjusting mechanism；Laser displacement sensor is installed in knife rest, and its Laser emission direction is relative with workpiece.Workpiece is driven to rotate by main shaft, laser displacement sensor is scanned and gathered position data to the point of side surface of workpiece and/or end face, handles the 3D mathematical models that those data obtain workpiece.The utility model is based on high-precision laser displacement sensor, with reference to the rotary motion of the linear motion and workpiece of laser displacement sensor, On-line rapid measurement can be carried out to the scale error of the geometric properties of measured workpiece, form error and site error etc., the scope of turning process on-line checking is extended, measurement accuracy is high.
Description
Technical field
The utility model belongs to contactless online field of precision measurement, and in particular to a kind of contactless turner
On-line measurement device.
Background technology
In turnery processing, continually processing workpiece need to be measured, mainly there is off-line measurement and on-line measurement two at present
Kind of mode completes the detection to workpiece.Work in-process according to off-line measurement mode, not only because shut down detection can caused by the time
On loss, also unload after workpiece calibration continue process inevitably produce secondary position error, to machining high-precision
For workpiece, this is to influence the one of the main reasons of workpiece quality.
On-line measurement refers to the process of that do not dismantle workpiece in processing measures to processing workpiece, and according to the result of detection
Make corresponding processing.At present, the on-line measurement of process, is primarily referred to as the on-line measurement of diameter of work and plane.
Difficulty is larger in terms of the even measurement of the surface profile of curved surface of circularity, cylindricity.Some disclosed patents have been disclosed for workpiece
On-line Measuring Method, such as the patent " on-line detecting system and detection method of NC Machine lathe process precision
(201210266131.5) " and " online test method (201210266355.6) of complex parts surface machining accuracy ", this inspection
Survey method uses the measuring method of contact, and detection process is slow, and accuracy of detection is poor, additionally needs the system generation measurement number of complexity
Control code.Patent " laser measurement system (201220420026.8) for being used for on-line measurement " is proposed with contactless Laser Measuring
Amount replaces mechanical contact measurement, and still, the measuring system announced only can be with on-line measurement plane floor recess, it is impossible to measure
The 3 d surface topography of workpiece.Patent " the online imaging detection device of cylinder wall machining accuracy and online imaging detection method
(200610155870.1) when " measuring inside and outside circle due to be not equipped with accurately driving measurement apparatus and with testee relative motion
Device, can only simply measure the face of cylinder, it is impossible to measure complex-curved, and measurement accuracy is not high.A kind of patent " circumferential swallow
Tail tongue-and-groove machining accuracy on-line checking instrument (201420560912.X) " can on-line checking dovetail groove machining accuracy, but should
Method is only capable of being detected for oat tail groove structure, while employing contact type measurement, measurement accuracy is low.
Utility model content
The purpose of this utility model is to overcome in place of the deficiencies in the prior art that there is provided a kind of contactless turner
On-line measurement device.
The utility model solves the technical scheme that its technical problem used：
A kind of on-line measurement device of contactless turner, including：
Lathe；
Main shaft, is installed in lathe；
Chuck, is installed in main shaft and can drive rotation by main shaft；
Workpiece, is installed in chuck and can drive rotation by chuck, and the rotation axis of workpiece is arranged in the first direction；
Guide rail, is arranged in the first direction, is installed in lathe；
Position adjusting mechanism, sliding installation is in guide rail and can in the first direction be reciprocatingly slided on guide rail；
Knife rest, is installed in position adjusting mechanism and can in a second direction be reciprocatingly slided by the position adjusting mechanism；
Laser displacement sensor, is installed in knife rest, and its measurement direction is adjustable and can be relative with workpiece, laser displacement sensing
The measurement accuracy of device is better than 20nm, and maximum sample frequency is not less than 350kHz；
Drive workpiece to rotate by main shaft, slided in the first direction by laser displacement sensor and to the point of side surface of workpiece
It is scanned and gathers position data and/or is slided in a second direction by laser displacement sensor and to the click-through of workpiece end face
The position data of the point of row scanning and collection position data, processing side surface of workpiece and/or end face obtains the 3D mathematical models of workpiece.
In one embodiment：The first direction is mutually perpendicular to second direction.
In one embodiment：The position adjusting mechanism is middle slide plate.
In one embodiment：The measurement accuracy of the laser displacement sensor is better than 10nm.
In one embodiment：The maximum sample frequency of the laser displacement sensor is not less than 392kHz.
In one embodiment：The laser displacement sensor is screwed onto the handle of a knife neck of the knife rest.
The technical program is compared with background technology, and it has the following advantages that：
1. the utility model is based on high-precision laser displacement sensor, laser is driven using the feed system of lathe in itself
Displacement transducer is moved, and the rotary motion of measured workpiece is driven with reference to chuck, can be special to nearly all geometry of measured workpiece
Dimensional tolerance, form tolerance and each geometric properties, the test position tolerance progress On-line rapid measurement levied, extend car
Cut the scope of process on-line checking.
2. the utility model realizes contactless on-line measurement, the rotary speed of measured workpiece can be improved, with reference to
Precision is better than 10nm laser displacement sensors so that sample frequency is sufficiently high, can be up to 400KHz.And the measurement side of contact
Formula, due to there is Mechanical Contact, sample frequency is very low, therefore measuring speed is very slow.Therefore the utility model is relative to routine
Measurement accuracy can improve an order of magnitude for contact measurement method.
3. the utility model is by the way of on-line measurement, it is to avoid clamping is introduced again in conventional offline measurement process
Secondary clamping error, it is ensured that the machining accuracy of workpiece.
Brief description of the drawings
The utility model is described in further detail with reference to the accompanying drawings and examples.
Fig. 1 is the on-line measurement apparatus structure schematic diagram of contactless turner of the present utility model.
Fig. 2 is measuring method principle schematic of the present utility model.
Fig. 3 is the 3D mathematical model schematic diagrames of the measured workpiece entirety obtained in the utility model embodiment.
Reference：Main shaft 1, chuck 2, guide rail 3, workpiece 4, laser displacement sensor 5, knife rest 6, screw 7, middle slide plate 8.
Embodiment
Content of the present utility model is illustrated below by embodiment：
It refer to Fig. 1, a kind of on-line measurement device of contactless turner, including：
Lathe；
Main shaft 1, is installed in lathe；
Chuck 2, is installed in main shaft 1 and can drive rotation by main shaft 1；
Workpiece 4, is installed in chuck 2 and can be driven by chuck 2 and rotate, and workpiece 4 rotation axis in the first direction (i.e.
Z-direction in Fig. 1) arrangement；
Guide rail 3, is arranged along Z-direction, is installed in lathe；
Position adjusting mechanism, is middle slide plate 8, sliding installation is in guide rail 3 and can be reciprocatingly slided on guides 3 along Z-direction；
Knife rest 6, is installed in middle slide plate 8 and can be by middle slide plate 8 in second direction (X-direction, X-axis and Z axis phase in Fig. 1
Reciprocatingly slided on mutually vertically)；
Laser displacement sensor (such as Keyemce LK-H008 types laser displacement sensor) 5, knife rest 6 is installed in by screw 7
Handle of a knife neck；Its measurement direction is relative with workpiece 4, and side or the end face of workpiece 4 can be respectively aligned to by regulation；The laser
The measurement accuracy of displacement transducer 5 is better than 10nm, and (the maximum sample frequency is set maximum sample frequency for laser displacement sensor
Standby parameter, is the maximum that laser displacement sensor sample frequency can reach, the maximum sampling of such as laser displacement sensor
Frequency is 100kHz, then the sample frequency for showing the laser displacement sensor is 0~100kHz) it is not less than 392kHz；In
Slide plate 8 and guide rail 3 cooperate and can adjust laser displacement sensor 5 in the position of X-direction and Z-direction；
The application method of the on-line measurement device of contactless turner of the present utility model is as follows：
1) when needing measurement 4 side data of workpiece, it is used as survey in the one section of external cylindrical surface of undressed region turning of workpiece 4 first
The reference-calibrating face of amount, the external diameter in reference-calibrating face is measured with outside micrometer；By the Laser emission side of laser displacement sensor 5
To being adjusted to launch along X-direction；The position of workpiece 4 and laser displacement sensor 5 is adjusted, it is determined that side measurement starting point, and
The reference-calibrating face and side of workpiece 4 is set to be respectively positioned in the range ability of laser displacement sensor 5；
When needing measurement 4 end face data of workpiece, the Laser emission direction of laser displacement sensor 5 is adjusted to along Z axis side
To (being along Z axis negative direction in Fig. 1) transmitting；The position of workpiece 4 and laser displacement sensor 5 is adjusted, determines that end surface measurement is originated
Point, and the end face of workpiece 4 is respectively positioned in the range ability of laser displacement sensor 5；
2) when measuring 4 side data of workpiece, start main shaft 1, drive workpiece 4 to be rotated with the rotating speed of setting by chuck 2, swash
Optical displacement sensor 5 measures starting point by side, slided on guides 3 along Z-direction with the speed set, by workpiece 4
Side periphery is gradually fed to workpiece 4, and reference-calibrating face and the side of workpiece 4 are scanned and reference-calibrating face and workpiece is gathered
The position data of the point of 4 sides, such as Fig. 2；
When measuring 4 end face data of workpiece, start main shaft 1, drive workpiece 4 to be rotated with the rotating speed of setting by chuck 2, laser
Displacement transducer 5 is slided, by workpiece 4 by middle slide plate 8 by end surface measurement starting point along X-direction with the speed set
End face periphery is fed to the centre of gyration of workpiece 4 along the end face radial line of workpiece 4, and the end face of workpiece 4 is scanned and the end face of workpiece 4 is gathered
Point position data；
3) behind measurement workpiece 4 side, the position data of the reference-calibrating face collected and the point of the side of workpiece 4 is imported into number
According to processing software, such as MATLAB, by certain data processing, the position of starting point is measured with reference to side, can be demarcated
The coordinate data and the regularity of distribution of the point of reference plane and the side of workpiece 4；The 3D numbers of the side of workpiece 4 can be drawn out according to those information
Word model；
Measure after the end face of workpiece 4, the position data of the point of the end face of workpiece 4 collected is imported into data processing software, warp
Cross certain data processing, with reference to the position of end surface measurement starting point, can obtain the point of the end face of workpiece 4 coordinate data and minute
Cloth rule；The 3D mathematical models of the end face of workpiece 4 can be drawn out according to those information；
As needed, if measuring side and the end face of workpiece 4 simultaneously, to the side of workpiece 4 and the 3D mathematical models of end face
Carry out splicing suture, you can obtain the overall 3D mathematical models of workpiece 4.
4) the Design CAD model of the 3D mathematical models of the side/end face of workpiece 4/entirety and workpiece 4 is compared by software
It is right, can be to the scale error of each geometric properties, site error between form error and each feature etc. is evaluated.
It should be noted that when measuring 4 side data of workpiece, side measurement starting point and workpiece 4 are in the Z-axis direction
Nearest distance is preferred with 3~5mm；Likewise, when measuring 4 end face data of workpiece, end surface measurement starting point is with workpiece 4 in X
Nearest distance on direction of principal axis is preferred with 3~5mm, i.e., side/end surface measurement starting point on workpiece 4 from side/end face with surveying
Distance of the point in Z axis/X-axis of amount starting point recently is preferred with 3~5mm, to ensure that laser displacement sensor 5 is originated from measurement
Point has just accelerated to the feed speed of setting before starting scanning to workpiece 4, be scanned with the feed speed of setting.Again simultaneously
It is unlikely to too remote.
Illustrate below by specific example：
A) turning is completed to obtain one with tapered workpiece, and survey is used as in workpiece one section of external cylindrical surface of undressed region turning
The reference-calibrating face of amount, length 2mm, the external diameter that reference-calibrating face is measured with outside micrometer is 76.880mm；
B) the Laser emission direction of laser displacement sensor is adjusted to launch along X-direction；Adjust workpiece and laser position
The position of displacement sensor, it is determined that side measurement starting point, and the reference-calibrating face and side of workpiece is respectively positioned on laser displacement biography
In the range ability of sensor；Side measurement starting point is 4mm with the nearest distance of workpiece in the Z-axis direction, it is ensured that laser position
Displacement sensor has just accelerated to setting speed before scanning to side surface of workpiece or reference-calibrating face；
C) start main shaft, drive workpiece to be rotated with 50rpm rotating speed by chuck, laser displacement sensor is measured by side
Starting point is set out, and along Z-direction, with 1 μm/r, (linear motion herein is more to be driven by main shaft, is and rotating speed on guide rail
Match somebody with somebody, point-to-point speed is represented by the go around feeding distance of straight-line feed part of main shaft herein, namely 1 μm/rpm) speed slides
It is dynamic, gradually fed from side surface of workpiece periphery to workpiece, feeding distance 100mm is scanned to reference-calibrating face and side surface of workpiece
And the position data of the point of reference-calibrating face and side surface of workpiece is gathered, sample frequency is 150kHz；
D) position data of the reference-calibrating face collected and the point of side surface of workpiece is imported into data processing software, by one
Fixed data processing, the position of starting point is measured with reference to side, the coordinate of the point of reference-calibrating face and side surface of workpiece can be obtained
Data and the regularity of distribution；The 3D mathematical models of side surface of workpiece can be drawn out according to those information；
E) the Laser emission direction of laser displacement sensor is adjusted to launch along Z-direction；Adjust workpiece and laser position
The position of displacement sensor, determines end surface measurement starting point, and the end face of workpiece is respectively positioned on the range model of laser displacement sensor
In enclosing；End surface measurement starting point is 4mm with the nearest distance of workpiece in the X-axis direction, it is ensured that laser displacement sensor is being swept
Setting speed has just been accelerated to before retouching workpiece end face；
F) start main shaft, drive workpiece to be rotated with 60rpm rotating speed by chuck, laser displacement sensor is by end surface measurement
Starting point is set out, and is slided by middle slide plate along X-direction with 1 μm/r speed, peripheral along workpiece end face radial line by workpiece end face
The workpiece centre of gyration is fed to, the position data of the point of workpiece end face is scanned and gathered to workpiece end face, sample frequency is
150kHz；
G) position data of the point of the workpiece end face collected is imported into data processing software, at certain data
Reason, with reference to the position of end surface measurement starting point, can obtain the coordinate data and the regularity of distribution of the point of workpiece end face；According to those
Information can draw out the 3D mathematical models of workpiece end face；
H) splicing suture is carried out to the 3D mathematical models of side surface of workpiece and end face, obtains the overall 3D mathematical models of workpiece,
Such as Fig. 3.
I) the Design CAD model of the 3D mathematical models of workpiece and workpiece is compared by software, can be to each geometry
The scale error of feature, the site error between form error and each feature etc. is evaluated.
It is described above, only the utility model preferred embodiment, therefore the utility model implementation can not be limited according to this
Scope, i.e., the equivalent changes and modifications made according to the utility model the scope of the claims and description all should still belong to this practicality new
In the range of type covers.
Claims (6)
1. a kind of on-line measurement device of contactless turner, it is characterised in that：Including：
Lathe；
Main shaft, is installed in lathe；
Chuck, is installed in main shaft and can drive rotation by main shaft；
Workpiece, is installed in chuck and can drive rotation by chuck, and the rotation axis of workpiece is arranged in the first direction；
Guide rail, is arranged in the first direction, is installed in lathe；
Position adjusting mechanism, sliding installation is in guide rail and can in the first direction be reciprocatingly slided on guide rail；
Knife rest, is installed in position adjusting mechanism and can in a second direction be reciprocatingly slided by the position adjusting mechanism；
Laser displacement sensor, is installed in knife rest, and its measurement direction is adjustable and can be relative with workpiece, the laser displacement sensor
Measurement accuracy is better than 20nm, and maximum sample frequency is not less than 350kHz；
Drive workpiece to rotate by main shaft, slided in the first direction by laser displacement sensor and the point of side surface of workpiece is carried out
Scan and gather position data and/or slided in a second direction by laser displacement sensor and the point of workpiece end face is swept
Position data is retouched and gathers, the position data for handling the point of side surface of workpiece and/or end face obtains the 3D mathematical models of workpiece.
2. the on-line measurement device of contactless turner according to claim 1, it is characterised in that：The first party
It is mutually perpendicular to second direction.
3. the on-line measurement device of contactless turner according to claim 1, it is characterised in that：Adjust the position
Complete machine structure is middle slide plate.
4. the on-line measurement device of contactless turner according to claim 1, it is characterised in that：The laser position
The measurement accuracy of displacement sensor is better than 10nm.
5. the on-line measurement device of contactless turner according to claim 1, it is characterised in that：The laser position
The maximum sample frequency of displacement sensor is not less than 392kHz.
6. the on-line measurement device of contactless turner according to claim 1, it is characterised in that：The laser position
Displacement sensor is screwed onto the handle of a knife neck of the knife rest.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720214197.8U CN206550755U (en) | 2017-03-07 | 2017-03-07 | A kind of on-line measurement device of contactless turner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720214197.8U CN206550755U (en) | 2017-03-07 | 2017-03-07 | A kind of on-line measurement device of contactless turner |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106736862A (en) * | 2017-03-07 | 2017-05-31 | 华侨大学 | A kind of on-line measurement device and method of contactless turner |
| CN108296500A (en) * | 2018-04-12 | 2018-07-20 | 吉林大学 | A kind of modular numerically controlled lathe process precision device for fast detecting and detection method |
| CN108581637A (en) * | 2018-04-27 | 2018-09-28 | 华中科技大学 | A kind of laser displacement sensor on-machine measurement system |
| CN108873807A (en) * | 2018-07-12 | 2018-11-23 | 上海优尼斯工业服务有限公司 | A kind of three axis numerically controlled machine Accuracy Assessment considering processing stability |
| CN108981566A (en) * | 2018-05-30 | 2018-12-11 | 北京理工大学 | A kind of workpiece morpheme is in level detecting apparatus |
| CN110049243A (en) * | 2019-04-19 | 2019-07-23 | 博众精工科技股份有限公司 | Image-pickup method, device, equipment and medium |
| CN110733141A (en) * | 2019-11-13 | 2020-01-31 | 中国工程物理研究院机械制造工艺研究所 | miniature ultra-precise single-point diamond fly-cutting machine tool |
-
2017
- 2017-03-07 CN CN201720214197.8U patent/CN206550755U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106736862A (en) * | 2017-03-07 | 2017-05-31 | 华侨大学 | A kind of on-line measurement device and method of contactless turner |
| CN108296500A (en) * | 2018-04-12 | 2018-07-20 | 吉林大学 | A kind of modular numerically controlled lathe process precision device for fast detecting and detection method |
| CN108296500B (en) * | 2018-04-12 | 2019-07-16 | 吉林大学 | A kind of modular numerically controlled lathe process precision device for fast detecting and detection method |
| CN108581637A (en) * | 2018-04-27 | 2018-09-28 | 华中科技大学 | A kind of laser displacement sensor on-machine measurement system |
| CN108981566A (en) * | 2018-05-30 | 2018-12-11 | 北京理工大学 | A kind of workpiece morpheme is in level detecting apparatus |
| CN108873807A (en) * | 2018-07-12 | 2018-11-23 | 上海优尼斯工业服务有限公司 | A kind of three axis numerically controlled machine Accuracy Assessment considering processing stability |
| CN110049243A (en) * | 2019-04-19 | 2019-07-23 | 博众精工科技股份有限公司 | Image-pickup method, device, equipment and medium |
| CN110733141A (en) * | 2019-11-13 | 2020-01-31 | 中国工程物理研究院机械制造工艺研究所 | miniature ultra-precise single-point diamond fly-cutting machine tool |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171013 |