A kind of automatic calibration syringe needle mechanismTechnical field:
The present invention relates to autoalign unit field, relate to a kind of automatic calibration syringe needle mechanism and the calibration steps thereof of using mechanical coordinate calibration syringe needle flexibility and height change in particular.
Background technology:
Sometimes syringe needle is needed to process product at workshop, and syringe needle often uses and can bend or height change, re-use the qualification rate that syringe needle will affect product after such replacing syringe needle, need flexibility and the height of calibrating syringe needle, be therefore necessary to design a kind of automatic calibration syringe needle mechanism.
Summary of the invention:
The object of the invention is for the deficiencies in the prior art part, provide a kind of automatic calibration syringe needle mechanism and calibration steps thereof, by mechanical coordinate calibration syringe needle flexibility and height change, its method of operating is simple, and calibration accurately.
Technology solution of the present invention is as follows:
A kind of automatic calibration syringe needle mechanism, it comprises correlation inductor, the front portion of described correlation inductor is torus structure, and rear portion is the hollow circular cylinder with four slotted eyes on sidewall, and is symmetrically installed with four groups of correlation inductor briquettings between torus structure and hollow circular cylinder; The annular wall of described torus structure is symmetrically installed with four emission sensor fixed legs, and four emission sensor fixed legs pass from the rear end of torus structure respectively and extend in hollow circular cylinder, are provided with emission sensor in each emission sensor fixed leg.
As preferably, the torus structure of the front portion of described correlation inductor and the hollow circular cylinder structural integrity at rear portion shaping.
As preferably, in described correlation inductor, be provided with emission sensor amplifier.
Adopt automatic calibration syringe needle mechanism to calibrate the method for syringe needle flexibility and height, it comprises the steps:
(1) two correlation inductor symmetry is mounted opposite, and two correlation inductors link together with motion control card respectively;
(2) syringe needle around kinematic axis in four emission sensor fixed legs of correlation inductor according to the motion of circular interpolation movement locus, syringe needle can accurately be encountered light that correlation inductor sends 4 times;
(3) after light four times encountered by each syringe needle, obtain function by the probe benefit of motion control card and write down Current mechanical coordinate immediately, try to achieve two straight-line equations by 4 points (X, Y), try to achieve intersecting point coordinate by straight-line equation again, namely the intersecting point coordinate of trying to achieve is the reference point of syringe needle;
(4), after writing down reference point, after changing syringe needle use syringe needle, when calibrating next time, the change of intersecting point coordinate is exactly the bending change of syringe needle again;
(5) after trying to achieve intersecting point coordinate, axis of motion is to the top of intersecting point coordinate, kinematic axis drives syringe needle slowly toward declining, the moment of the emission sensor encountered when syringe needle writes down the mechanical coordinate of current Z axis, the Z axis coordinate of first time calibration i.e. reference point, the intersecting point coordinate of trying to achieve when the nose heave new school pin of needle exchange next time time and reference coordinate compare, and can know that the variable quantity of needle height is how many.
Beneficial effect of the present invention is:
The present invention uses mechanical coordinate calibration syringe needle flexibility and height change, and two correlation inductor symmetries are mounted opposite; It (also can be other movement locus that syringe needle moves according to circular interpolation movement locus in four emission sensor fixed legs of correlation inductor around kinematic axis, as long as can meet syringe needle can correctly encounter light that correlation inductor sends 4 times just can), syringe needle can accurately be encountered light that correlation inductor sends 4 times; After light four times encountered by syringe needle, obtain function by the probe benefit of motion control card and write down Current mechanical coordinate immediately, try to achieve two straight-line equations by 4 points (X, Y), try to achieve intersecting point coordinate by straight-line equation again, namely the intersecting point coordinate of trying to achieve is the reference point of syringe needle; After writing down reference point, after changing syringe needle use syringe needle, when calibrating next time, the change of intersecting point coordinate is exactly the bending change of syringe needle again; After trying to achieve intersecting point coordinate, axis of motion is to the top of intersecting point coordinate, kinematic axis drives syringe needle slowly toward declining, the moment of the emission sensor encountered when syringe needle writes down the mechanical coordinate of current Z axis, the Z axis coordinate of first time calibration i.e. reference point, the intersecting point coordinate of trying to achieve when the nose heave new school pin of needle exchange next time time and reference coordinate compare, and can know that the variable quantity of needle height is how many.
Accompanying drawing illustrates:
Below in conjunction with accompanying drawing, the present invention is described further:
Fig. 1 is structural representation of the present invention;
Fig. 2 is another structural representation of the present invention;
Fig. 3 is the front view of Fig. 1.
Embodiment:
Embodiment, see accompanying drawing 1 ~ 3, a kind of automatic calibration syringe needle mechanism, it comprises correlation inductor 1, the front portion of described correlation inductor is torus structure, rear portion is the hollow circular cylinder with four slotted eyes 2 on sidewall, the torus structure of the front portion of correlation inductor and the hollow circular cylinder structural integrity at rear portion shaping, and between torus structure and hollow circular cylinder, be symmetrically installed with four groups of correlation inductor briquettings 3; The annular wall of described torus structure is symmetrically installed with four emission sensor fixed legs 4, and four emission sensor fixed legs pass from the rear end of torus structure respectively and extend in hollow circular cylinder, are provided with emission sensor in each emission sensor fixed leg.
Be provided with emission sensor amplifier in described correlation inductor, four emission sensors are connected with emission sensor amplifier electric respectively, and the amplification of emission sensor amplifier processes and exports corresponding signal by emission sensor Received signal strength.
Adopt automatic calibration syringe needle mechanism to calibrate the method for syringe needle flexibility and height, it comprises the steps:
(1) two symmetrical relative positioning of correlation inductor is installed, and two correlation inductors link together with motion control card respectively;
(2) syringe needle around kinematic axis in four emission sensor fixed legs of correlation inductor according to the motion of circular interpolation movement locus, syringe needle can accurately be encountered light that correlation inductor sends 4 times;
(3) after light four times encountered by each syringe needle, obtain function by the probe benefit of motion control card and write down Current mechanical coordinate immediately, try to achieve two straight-line equations by 4 points (X, Y), try to achieve intersecting point coordinate by straight-line equation again, namely the intersecting point coordinate of trying to achieve is the reference point of syringe needle;
(4), after writing down reference point, after changing syringe needle use syringe needle, when calibrating next time, the change of intersecting point coordinate is exactly the bending change of syringe needle again;
(5) after trying to achieve intersecting point coordinate, axis of motion is to the top of intersecting point coordinate, kinematic axis drives syringe needle slowly toward declining, the moment of the emission sensor encountered when syringe needle writes down the mechanical coordinate of current Z axis, the Z axis coordinate of first time calibration i.e. reference point, the intersecting point coordinate of trying to achieve when the nose heave new school pin of needle exchange next time time and reference coordinate compare, and can know that the variable quantity of needle height is how many.
Above-described embodiment is the specific descriptions of carrying out the present invention; just the present invention is further described; can not be interpreted as limiting the scope of the present invention, those skilled in the art makes some nonessential improvement according to the content of foregoing invention and adjustment all falls within protection scope of the present invention.