A kind of sample automatic centering dimension measuring device
Technical field
The present invention relates to a kind of size automatic measuring device, relate in particular to a kind of device that sample to be tested is carried out measurement size after the automatic centering.
Background technology
In the extension test test of metalwork, at present before and after extension test, size to sample generally still adopts hand dipping (for example: tool using is a vernier caliper), and the supervisory personnel is because the gimmick difference and the collimation error bring than mistake for the dimensional measurement result of sample.For example in the mechanics extension test of steel sample, in order to obtain the series datas such as ductility of steel sample, generally before test and in the test, need repeatedly multiple spot sample to be carried out the test of relative dimensions, as accompanying drawing 1 is the standard steel sample, need carry out width and highly test to multiple spot on the sample, the present manual test that adopts not only one-shot measurement size produces error, and after stretched process, by manually testing once more and can producing new error, cause whole extension test resultant error big, with a low credibility thus.
Summary of the invention
The invention provides a kind of sample automatic centering dimension measuring device, solve the manual measurement that exists when present specimen size is measured and produce multiple measurement result, error is big, has influence on the defective of other test result.
Technical scheme of the present invention is as follows:
A kind of sample automatic centering dimension measuring device comprises substrate 1, is fixed with sample holder displacement mechanism, sample centering displacement mechanism, sample centering body and sample measurement mechanism on substrate 1, it is characterized in that:
Described sample holder displacement mechanism comprises the X axis guide rail 2 that is horizontally set on the substrate 1, and mobile web joint 3 is arranged on the guide rail 2, and both sides are equipped with horizon sample clamping gas pawl 6 on the web joint 3;
Described sample centering displacement mechanism comprise be fixed on the substrate 1 perpendicular to X axis guide rail 2 and cross over that X axis guide rail 2 is provided with about two Y-axis to guide rail bridge 7, two guide rail bridges 7 are contour and be higher than between 6, two guide rail bridges 7 of described sample holder gas pawl for connecting the sample centering body of two bridges;
Described sample centering body comprises the centering plate 8 that connects two bridges, the centering plate is in for 8 times former and later two vertical aligning arms 9 on the two bridge center lines, each aligning arm 9 connects two horizontal centring wheels 10, form scissors shape opening-closing structure, returning spring 11 is housed on the aligning arm 9, described aligning arm 9 levels connect centering cylinder 12, vertically connect centering and promote cylinder 13, and described centering plate 8 connects centering and moves cylinder 14;
Described sample measurement mechanism comprises and is arranged on X axis guide rail 2 sides and perpendicular to the bearing 15 of X axis guide rail 2, installs on bearing 15 by measuring the measuring light gate sensor 17 that cylinder 16 promotes.
Described mobile web joint 3 is promoted by the ball-screw 4 that is connecting servomotor 5.
A wherein side gas pawl of described both sides sample holder gas pawl 6 is connected with rotary cylinder 18.
Described sample measurement mechanism comprises the bearing 15 that is arranged on X axis guide rail 2 both sides, and the cylinder 16 of measurement and measuring light gate sensor 17 are arranged respectively on each bearing 15.
Beneficial effect
The present invention by automatic centering after the shift position sample is carried out repeatedly automatic sizing of multiple spot, reduced the error of hand dipping, improved the precision of measuring, and alleviated experimental measurement person's work, improved work efficiency, and can sample be installed on sample holder gas pawl, thereby realize and being connected of the full-automation of correlation test equipment by automatic arm.
Description of drawings
Fig. 1 is a steel sample synoptic diagram to be measured;
Fig. 2 is a vertical view of the present invention, and wherein the sample centering body is in initial position (not comprising that centering promotes cylinder);
Fig. 3 is a vertical view of the present invention, wherein the position of sample centering body when the centering sample;
Fig. 4 is a front view of the present invention;
Fig. 5 is the vertical view of sample measurement of the present invention mechanism;
Fig. 6 is the left view of sample measurement of the present invention mechanism.
Embodiment
A kind of sample automatic centering dimension measuring device comprises substrate 1, is fixed with sample holder displacement mechanism, sample centering displacement mechanism, sample centering body and sample measurement mechanism on substrate 1, wherein:
Described sample holder displacement mechanism comprises the X axis guide rail 2 that is horizontally set on the substrate 1, mobile web joint 3 is arranged on the guide rail 2, described mobile web joint 3 promotes by the ball-screw 4 that is connecting servomotor 5, both sides are equipped with horizon sample clamping gas pawl 6 on the web joint 3, and wherein a side gas pawl is connected with and horizontally rotates cylinder 18;
Described sample centering displacement mechanism comprise be fixed on the substrate 1 perpendicular to X axis guide rail 2 and cross over that X axis guide rail 2 is provided with about two Y-axis to guide rail bridge 7, two guide rail bridges 7 are contour and be higher than between 6, two guide rail bridges 7 of described sample holder gas pawl for connecting the sample centering body of two bridges;
Described sample centering body comprises the centering plate 8 that connects two bridges, the centering plate is in for 8 times former and later two vertical aligning arms 9 on the two bridge center lines, each aligning arm 9 connects two horizontal centring wheels 10, form scissors shape opening-closing structure, returning spring 11 is housed on the aligning arm 9, described aligning arm 9 levels connect centering cylinder 12, vertically connect centering and promote cylinder 13, and described centering plate 8 connects centering and moves cylinder 14;
Described sample measurement mechanism comprises and is arranged on X axis guide rail 2 sides and perpendicular to the bearing 15 of X axis guide rail 2, installs on bearing 15 by measuring the measuring light gate sensor 17 that cylinder 16 promotes.
There are two covers in described sample measurement mechanism, is positioned at X axis guide rail 2 both sides, can carry out the while two point and measure, increase work efficiency, or the measurement of comparing.
It is as follows to use the method order that this covering device tests:
The first step, the sample presentation mechanical arm sample to be tested after with tension test takes out and is placed on 6 of sample holder gas pawls, and clamping gas pawl 6 opens and clamps sample, and the sample presentation mechanical arm leaves;
Second step, centering is moved cylinder 14 drive centering plates 8 and other centering body moves on the sample to be tested to guide rail bridge 7 along Y-axis, centering lifting cylinder 13 extends specimen height with aligning arm 9 the sample both sides is clamped, clamping gas pawl 6 unclamps sample, centering cylinder 12 promotes aligning arm 9 and centering wheel 10, centering wheel 10 is flared to sample both sides symmetry along the sample side circular arc place is withstood, make sample center line and centering body central lines, finish sample centering, after the centering, clamping gas pawl 6 is firmly grasped sample once more, and centering body is withdrawn and returned back to initial position along Y-axis to guide rail bridge 7;
The 3rd step, servomotor 5 drives ball-screw 4, driving mobile web joint 3, both sides gas pawl 6 and sample then moves to sample measurement mechanism direction on X axis guide rail 2, the distance that moves is that the distance of sample measurement mechanism and centering body center line is (after device finishes, this distance value is known numeric value), measure cylinder 16 and can carry out the dimensional measurement of width to the sample center by web member promotion measuring light gate sensor 17, rotary cylinder 18 half-twists, the thickness of 17 pairs of samples of measuring light gate sensor carries out dimensional measurement.
Test the size of other position if desired, can make this position of sample move to sample measurement mechanism place according to position and distance mobile sample on X axis guide rail 2 at sample center and carry out relevant dimensional measurement.