CN205940469U - Linear guide precision testing arrangement - Google Patents
Linear guide precision testing arrangement Download PDFInfo
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- CN205940469U CN205940469U CN201620865871.4U CN201620865871U CN205940469U CN 205940469 U CN205940469 U CN 205940469U CN 201620865871 U CN201620865871 U CN 201620865871U CN 205940469 U CN205940469 U CN 205940469U
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Abstract
The utility model discloses a linear guide precision testing arrangement, the device sets up the platform including the frame in, be provided with Z axle straight line slip table on the platform, through keysets fixed mounting two way synchronization straight line slip table on the Z axle straight line slip table, Z axle straight line slip table and two way synchronization straight line slip table mutually perpendicular, the two way synchronization straight line is gone up the symmetry and is set up a pair of laser displacement sensor, is a laser displacement sensor and the 2nd laser displacement sensor respectively, Z axle straight line slip table one side is through support frame fixed mounting displacement sensor, displacement sensor aims at the platform perpendicularly, set up first mounting bracket and second mounting bracket in the middle of the platform, first mounting bracket and second mounting bracket are about Z axle straight line slip table symmetry. The utility model discloses a measuring device simple structure, very big reduction space utilizes, and need not to carry on loaded down with trivial details fastening work, especially adapted automatic detection demand.
Description
Technical field
The utility model is related to field of measuring technique, particularly a kind of novel linear guide precision test device.
Background technology
At present, rolling linear guide precision measure is measured using hand dipping or touch sensor mostly, manual
During the measurement guide rail raceway depth of parallelism, by guide rail clamping on the fixture of measurement flat board, by gauge stand and rail-sides datum level and guide rail
Mounting plane aligns, and gauge outfit is aligned on guide rail roller surface, then moves gauge stand and measures, the maximum and minimum value of measurement
Difference be guide rail raceway parallelism error, the method needs loaded down with trivial details clamping work, high to laboratory technician's competency profiling and survey
Amount result poor repeatability；Chinese utility model publication number CN103438839A, entitled：A kind of line slideway precision automatic measurement
Device and its measuring method, the patent describe and measure guide precision using noncontacting proximity sensor, and this sensor is in contact
Install Pneumatic component additional on formula sensor so as to not contact testee during inoperative, during measurement, install this kind of sensing additional
The standard slider of device moves at certain intervals, realizes the measurement to tested guide rail height and the depth of parallelism, and the method measurement is different
Need to make corresponding standard rail and standard slider during model guide rail, increase financial cost and maintenance cost.
In sum, the measure the item that the various guide precision measuring instruments using at this stage cover is few, in particular for
The measurement of raceway phase closing precision is less, and measurement efficiency is all had much room for improvement with certainty of measurement, repeatability.
Utility model content
The purpose of this utility model is to provide a kind of novel linear guide precision test device.
The technical solution realizing the utility model purpose is：A kind of line slideway accuracy test device, including frame,
In frame, platform is set, platform is provided with Z axis straight line slide unit, Z axis straight line slide unit is fixedly mounted by keyset two-way same
Step straight line slide unit, described Z axis straight line slide unit and bi-directional synchronization straight line slide unit are mutually perpendicular to, and bi-directional synchronization straight line is symmetrical arranged one
To laser displacement sensor, respectively first laser displacement transducer and second laser displacement transducer, described Z axis straight line slide unit
Side fixedly mounts displacement transducer, institute's displacement sensors perpendicular alignmnet platform, described platform middle setting by bracing frame
First installing rack and the second installing rack, described first installing rack and the second installing rack are symmetrical with regard to Z axis straight line slide unit, the first installation
Be connected on frame first hydraulic cylinder, and the end of first hydraulic cylinder arranges the first top surface briquetting, connected second on described second installing rack
Hydraulic cylinder, the end of second hydraulic cylinder arranges the second top surface briquetting；
In front of described platform, both sides arrange the first installing plate and the second installing plate, and above-mentioned two installing plate is with regard to Z axis straight line
Slide unit is symmetrical, and the wherein first installing plate is connected first side hydraulic cylinder, the end setting first side of first side hydraulic cylinder
Briquetting, the second installing plate is connected second side hydraulic cylinder, the end setting second side briquetting of second side hydraulic cylinder.
Described mesa base is provided with a pair of Pneumatic non-contact displacement transducer, the respectively first sensing by groove type plate
Device and second sensor.
Described first top surface briquetting, the hardness of the second top surface briquetting, first side briquetting and second side briquetting are less than axle
Hold steel GCr15 hardness.
A kind of measuring method based on above-mentioned line slideway accuracy test device, comprises the following steps：
Step 1, startup first sensor and second sensor, so as to be aligned marble platform upper surface, collect initial value
A0, b0；
Step 2, tested guide rail is positioned in marble platform, starts Z axis straight line slide unit and bi-directional synchronization straight line slide unit
Driving means, make first laser displacement transducer and second laser displacement transducer be symmetrically positioned in guide rail both sides, and first swash
The laser rays of Optical displacement sensor and the injection of second laser displacement transducer is slightly above tested guide rail height, stops Z axis straight line and slides
Platform and the motion of bi-directional synchronization straight line slide unit, start displacement transducer, first laser displacement transducer and second laser displacement and pass
Sensor；
Step 3, the mobile tested guide rail first hydraulic cylinder of startup, second hydraulic cylinder, first side hydraulic cylinder and second side
Hydraulic cylinder makes the first top surface briquetting, the second top surface briquetting, first side briquetting and second side briquetting push down tested guide rail；
Step 4, the driving means of startup Z axis straight line slide unit drive bi-directional synchronization straight line slide unit to move straight down, displacement
Sensor, first laser displacement transducer and second laser displacement transducer collect measurement data ci, di, ei, set when moving to
Put apart from when stop and return initial point, start first sensor and second sensor be aligned tested guide rail bottom surface, obtain measured value
Ai, bi；
Step 5, mobile tested guide rail are to cross section, repeat step 3 and the step 4 setting；
Step 6, the height by above measurement result evaluation tested guide rail, the depth of parallelism and arc radius.
Compared with prior art, its remarkable advantage is the utility model：1) what measurement apparatus of the present utility model adopted is non-
Tangent displacement sensor measures good stability, high precision, and compared to tangent displacement sensor, its vibrated impact is little,
And test platform structure is also relatively easy；2), compared with beating the measuring method of table with traditional-handwork, method of the present utility model eliminates
Loaded down with trivial details clamping is worked with platform maintenance, greatly improves measurement efficiency, when the labour intensity reducing operator is with learning
Between；3) device of the present utility model compare other line slideway precision automatic detecting platforms greatly reduce space use, ten
Divide suitable automated production detection demand.
Below in conjunction with the accompanying drawings the utility model is described in further detail.
Brief description
Fig. 1 is the general structure schematic diagram of novel linear guide precision test device.
Fig. 2 is the mounting arrangement figure of sensor.
Specific embodiment
In conjunction with Fig. 1, Fig. 2, a kind of line slideway accuracy test device of the present utility model, including frame 1, frame 1 sets
Horizontalization platform 2, platform 2 is provided with Z axis straight line slide unit 3, Z axis straight line slide unit 3 fixedly mounts bi-directional synchronization by keyset 4 straight
Line slide unit 5, described Z axis straight line slide unit 3 and bi-directional synchronization straight line slide unit 5 are mutually perpendicular to, and bi-directional synchronization straight line 5 is symmetrical arranged one
To laser displacement sensor, respectively first laser displacement transducer 6 and second laser displacement transducer 7, described Z axis straight line is slided
Platform 3 side fixedly mounts displacement transducer 11 by bracing frame 10, and institute's displacement sensors 11 perpendicular alignmnet platform 2 is described flat
Platform 2 middle setting the first installing rack 12 and the second installing rack 18, described first installing rack 12 and the second installing rack 18 are straight with regard to Z axis
Line slide unit 3 is symmetrical, and the first installing rack 12 is connected first hydraulic cylinder 13, and the end of first hydraulic cylinder 13 arranges the first top surface briquetting
14, described second installing rack 18 is connected second hydraulic cylinder 19, and the end of second hydraulic cylinder 19 arranges the second top surface briquetting 20；
Described platform 2 front both sides arrange the first installing plate 15 and the second installing plate 21, and above-mentioned two installing plate is with regard to Z axis
Straight line slide unit 3 is symmetrical, and the wherein first installing plate 15 is connected first side hydraulic cylinder 16, and the end of first side hydraulic cylinder 16 sets
Put first side briquetting 17, the second installing plate 21 is connected second side hydraulic cylinder 22, and the end of second side hydraulic cylinder 22 sets
Put second side briquetting 23.
Platform 2 bottom is provided with a pair of Pneumatic non-contact displacement transducer, the respectively first sensing by groove type plate 24
Device 8 and second sensor 9.
Described first top surface briquetting 14, the second top surface briquetting 20, first side briquetting 17 and second side briquetting 23 hard
Degree is less than beating steel GCr15 hardness.
A kind of measuring method based on above-mentioned line slideway accuracy test device, comprises the following steps：
Step 1, startup first sensor 8 and second sensor 9, so as to be aligned marble platform 2 upper surface, are collected initial
Value a0, b0；
Step 2, tested guide rail is positioned in marble platform 2, starts Z axis straight line slide unit 3 and bi-directional synchronization straight line is slided
The driving means of platform 5, make first laser displacement transducer 6 and second laser displacement transducer 7 be symmetrically positioned in guide rail both sides, and the
The laser rays of one laser displacement sensor 6 and second laser displacement transducer 7 injection is slightly above tested guide rail height, stops Z axis
Straight line slide unit 3 and the motion of bi-directional synchronization straight line slide unit 5, start displacement transducer 12, first laser displacement transducer 6 and second
Laser displacement sensor 7；
Step 3, the mobile tested guide rail first hydraulic cylinder 13 that starts, second hydraulic cylinder 19, first side hydraulic cylinder 16 and the
Two side faces hydraulic cylinder 22 makes the first top surface briquetting 14, the second top surface briquetting 20, first side briquetting 17 and second side briquetting 23
Push down tested guide rail；
Step 4, the driving means of startup Z axis straight line slide unit 3 drive bi-directional synchronization straight line slide unit 5 to move straight down, position
Displacement sensor 12, first laser displacement transducer 6 and second laser displacement transducer 7 collect measurement data ci, di, ei, work as fortune
Move setting apart from when stop and return initial point, start first sensor 8 and second sensor 9 be aligned tested guide rail bottom surface, obtain
Obtain measured value ai, bi；
Step 5, mobile tested guide rail are to cross section, repeat step 3 and the step 4 setting；
Step 6, the height by above measurement result evaluation tested guide rail, the depth of parallelism and arc radius.
Measured value ai in a certain section of tested guide rail is obtained by above-mentioned measurement, bi, ci, di, ei (i=1,2,3,
... n), according to the vertical coordinate in the tested guide rail raceway center of circle with and the measurement average of non-contact displacement transducer 8,9 can try to achieve and lead
Rail height and the depth of parallelism, measure point coordinates according to tested guide rail raceway and obtain tested guide rail raceway radius, computational methods are as follows：
Assume that on tested guide rail raceway arc surface, measurement point coordinates is (Ci, Di) and (Ci, Ei), by circular fitting algorithm
Obtain left and right raceway arc radius RLi and RRi, and raceway center coordinate of arc (LXi, LYi) and (RXi, RYi)；
It is spaced movement at a certain distance in tested guide rail length range, can get the measured value of each measurement position:
RL1, RL2, RL3 ..., RLn；
RR1, RR2, RR3 ..., RRn；
(LX1, LY1), (LX2, LY2) ..., (LXn, LYn)；
(RX1, RY1), (RX2, RY2) ..., (RXn, RYn)；
Then tested guide rail in the height of each measurement position is：Hi=0.5 (LYi+RYi) -0.5 (ai-a0+bi-b0)；
The maximum taking the height measurements absolute value of each position is tested guide rail height：max(hi)；
The mean value taking the left arc radius of tested guide rail of each position is tested guide rail left arc raceway radius value：
AVERAGE(RL1+RL2+RL3+...+RLn)；
The mean value taking the right arc radius of tested guide rail of each position is tested guide rail right arc raceway radius value：
AVERAGE(RR1+RR2+RR3+...+RRn)；
The difference taking the maxima and minima of tested guide rail height measurements of each position is the depth of parallelism measuring guide rail：
max(hi)-min(hi)；
From the foregoing, it will be observed that device of the present utility model can test the measurement of line slideway precision dynamic, test efficiency is high, measurement
Data is true and reliable.
Claims (3)
1. it is characterised in that including frame [1], frame [1] is upper to arrange platform [2] to a kind of line slideway accuracy test device, puts down
Z axis straight line slide unit [3] are provided with platform [2], Z axis straight line slide unit [3] are upper to fixedly mount bi-directional synchronization straight line by keyset [4]
Slide unit [5], described Z axis straight line slide unit [3] and bi-directional synchronization straight line slide unit [5] are mutually perpendicular to, and bi-directional synchronization straight line [5] is upper symmetrical
A pair of laser displacement sensor, respectively first laser displacement transducer [6] and second laser displacement transducer [7], institute are set
State Z axis straight line slide unit [3] side and displacement transducer [11] is fixedly mounted by bracing frame [10], institute's displacement sensors [11] hangs down
Straight alignment stage [2], described platform [2] middle setting the first installing rack [12] and the second installing rack [18], described first installation
Frame [12] and the second installing rack [18] are symmetrical with regard to Z axis straight line slide unit [3], the upper first hydraulic cylinder that is connected of the first installing rack [12]
[13], the end of first hydraulic cylinder [13] arranges the first top surface briquetting [14], upper second liquid that is connected of described second installing rack [18]
Cylinder pressure [19], the end of second hydraulic cylinder [19] arranges the second top surface briquetting [20]；
In front of described platform [2], both sides arrange the first installing plate [15] and the second installing plate [21], and above-mentioned two installing plate is with regard to Z
Axle straight line slide unit [3] is symmetrical, the upper first side hydraulic cylinder [16] that is connected of the wherein first installing plate [15], first side hydraulic cylinder
[16] end setting first side briquetting [17], the upper second side hydraulic cylinder [22] that is connected of the second installing plate [21], second
End setting second side briquetting [23] of side hydraulic cylinder [22].
2. line slideway accuracy test device according to claim 1 is it is characterised in that grooved is passed through in platform [2] bottom
Plate [24] is provided with a pair of Pneumatic non-contact displacement transducer, respectively first sensor [8] and second sensor [9].
3. line slideway accuracy test device according to claim 1 is it is characterised in that described first top surface briquetting
[14], the hardness of the second top surface briquetting [20], first side briquetting [17] and second side briquetting [23] is less than beating steel GCr15
Hardness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620865871.4U CN205940469U (en) | 2016-08-10 | 2016-08-10 | Linear guide precision testing arrangement |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620865871.4U CN205940469U (en) | 2016-08-10 | 2016-08-10 | Linear guide precision testing arrangement |
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| CN205940469U true CN205940469U (en) | 2017-02-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106247955A (en) * | 2016-08-10 | 2016-12-21 | 南京理工大学 | A kind of line slideway accuracy test device and measuring method |
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2016
- 2016-08-10 CN CN201620865871.4U patent/CN205940469U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106247955A (en) * | 2016-08-10 | 2016-12-21 | 南京理工大学 | A kind of line slideway accuracy test device and measuring method |
| CN106247955B (en) * | 2016-08-10 | 2018-11-02 | 南京理工大学 | A kind of the linear guide accuracy test device and measurement method |
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