CN201281591Y - Precision measurement apparatus for air valve ball head - Google Patents
Precision measurement apparatus for air valve ball head Download PDFInfo
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- CN201281591Y CN201281591Y CNU2008201529173U CN200820152917U CN201281591Y CN 201281591 Y CN201281591 Y CN 201281591Y CN U2008201529173 U CNU2008201529173 U CN U2008201529173U CN 200820152917 U CN200820152917 U CN 200820152917U CN 201281591 Y CN201281591 Y CN 201281591Y
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Abstract
The utility model relates to a precision measuring device for the clearance of the ball head of an air valve, comprising a bottom plate, two parallel guide sleeves of guide poles, a detecting plate, a pressure workpiece part, a pressing part, a workpiece location part; wherein, the detecting plate is vertical to the bottom plate; the pressure workpiece part and the pressing part are fixed on the bottom plate; the guide sleeves of the guide poles and the pressing part can be adjusted corresponding to the position of the bottom plate; the guide poles are fixed on the detecting plate vertically; the pressing part is positioned between guide-sleeve bases and is connected with a pressure transmitter that pushes against the center of the detecting plate; the pressure workpiece part comprises a pressure workpiece shaft that is arranged towards the detecting plate correspondingly to the pressure transmitter; displacement sensors are fixed on the guide-sleeve bases; and the head part of a measuring rod is contacted with the detecting plate. The precision measuring device eliminates the measurement error caused by elastic deformation generated by the stressed moving parts of the original equipment, and eliminates the measuring error caused by the auxiliary clearance of the screw rod of the original equipment; furthermore, the measurement precision is high, and the stability is good.
Description
Technical field
The utility model relates to the measurement mechanism technical field, and particularly the precision measurement apparatus technical field specifically is meant a kind of air valve bulb gap precision measurement apparatus.
Background technology
In the auto parts and components automated arm is made, need carry out precision measurement to air valve bulb gap, see also the original equipment that is used for the gap precision measurement of air valve bulb shown in Fig. 1～Fig. 1 b, its brake pushrod pressing mechanism and measuring mechanism all are fixed on the line slideway slide block fixed head 307.Its structure is: top workpiece piece 301 is fixed on cylinder 308 piston rod front ends, measures 302 1 faces of bent plate and is fixed on the kicker 301, and another vertical narrow end surface slides with cylinder 308 front and back in bent plate gathering sill 303.Bent plate gathering sill 303, displacement transducer 304 and cylinder 308 all are fixed on the line slideway slide block fixed head 307.Line slideway slide block fixed head 3077 moves by rotating threaded shaft pair 306 straight line on base plate 3055.Because measurement mechanism and pressue device design are together, not thoroughly not separately, make pressue device produce distortion, the stressed back of moving component produces elastic deformation and causes measuring error; Measuring error is caused in the lead screw pair gap, causes error to produce, owing to be the device design problem, error can't be eliminated, and causes measurement products precision and actual value to exist than mistake, has a strong impact on constant product quality.
Therefore, press for the said equipment is improved, make its measuring accuracy height, good stability.
The utility model content
The purpose of this utility model is to have overcome above-mentioned shortcoming of the prior art, a kind of air valve bulb gap precision measurement apparatus is provided, the stressed back of moving component that this device has been eliminated existing equipment produces the measuring error that elastic deformation causes, and the measuring error that causes of the screw pair gap of having eliminated existing equipment, measuring accuracy height, good stability.
To achieve these goals, air valve bulb of the present utility model gap precision measurement apparatus has following formation:
This air valve bulb gap precision measurement apparatus, be characterized in, comprise base plate, the two guide pillar guide pin bushing parts that be arranged in parallel, check-out console perpendicular to described base plate, be fixed on pressure workpiece component and press member and workpiece positioning element on the described base plate, and pressure unit and displacement transducer, described guide pillar guide pin bushing parts comprise the guide pin bushing seat that is fixed on the described base plate, be arranged in the guide pillar and the ball of described guide pin bushing seat, described ball is positioned at described guide pillar side, described check-out console comprise first surface and with described first surface opposing second surface, two described guide pillars are vertically fixed on the end positions on the described first surface respectively, described press member is connected between two described guide pin bushing seats and with described pressure unit, the free end of described pressure unit is against described first surface center, the described check-out console of the axis normal of described pressure unit, described pressure workpiece component comprises the pressure workpiece spindle towards described second panel, the described dead in line of the axis of described pressure workpiece spindle and described pressure unit, described workpiece positioning element is between described second surface and described pressure workpiece component, described displacement transducer is fixed on the described guide pin bushing seat, and the sounding rod head of described displacement transducer contacts with described check-out console.
Preferably, described pressure workpiece component also comprises axle sleeve, axle sleeve holder and pressure actuating member, described axle sleeve holder is fixed on the described base plate, described axle sleeve is fixed in the described axle sleeve holder, described pressure workpiece spindle is arranged in described axle sleeve, and described pressure workpiece spindle connects described pressure actuating member away from an end of described check-out console.
More preferably, described pressure actuating member comprises that air valve holds out against cylinder and cylinder floating junction, described air valve holds out against the piston rod that cylinder comprises cylinder and is arranged in described cylinder, the described dead in line of the axis of described piston rod and described pressure workpiece spindle, described cylinder floating joint connect described piston rod and described pressure workpiece spindle respectively.
Further, described cylinder floating joint is connected by screw-threaded engagement with described pressure workpiece spindle.
Preferably, described press member comprises that brake pushrod holds out against cylinder, described brake pushrod holds out against cylinder and comprises and hold out against cylinder and be arranged in the described piston rod that holds out against that holds out against cylinder, described piston rod one end that holds out against connects described pressure unit, the described described dead in line that holds out against the axis and the described pressure unit of piston rod.
More preferably, also comprise at least one sensor, described sensor is fixed on the described base plate, and the measuring head of described sensor and the described piston rod free end that holds out against are equipped with and are used to detect the described position that holds out against piston rod.
More preferably, also comprise gas-holder, described gas-holder is communicated with the described cylinder that holds out against.
Preferably, also comprise press member moving member and slide plate, described press member moving member comprises the holder that is fixed on the described base plate and is arranged in the bull stick of described holder, has screw thread on the described bull stick, described press member is provided with threaded hole, described bull stick wears described threaded hole and the engagement of described threaded hole, the wall of described threaded hole has breach along the axis direction of described bull stick, described breach connects by screw, described press member is fixed on the described slide plate, has the groove that Open Side Down under the described slide plate, have the line slide rail parallel on the described base plate with described bull stick, described line slide rail is arranged in described groove, the axis of described bull stick and the parallel axes of described guide pillar.
Preferably, also comprise guide pin bushing seat slide block and slide block holder, described slide block holder is fixed on the described base plate, described slide block holder has chute, described guide pin bushing seat slide block set is connected in the described chute, described guide pin bushing seat and described guide pin bushing seat slide block are by screw retention, and described chute is parallel to described guide pillar.
Preferably, also comprise reaction spring, described reaction spring is enclosed within on the described sounding rod respectively against described check-out console and described displacement detector.
Preferably, described workpiece positioning element comprises first location-plate, second location-plate and the upper limit spare, described first location-plate and described second location-plate are fixed on and are parallel to described check-out console on the described base plate, described first location-plate and described second location-plate be suitable distance at interval, described pressure workpiece spindle free end wears described first location-plate between described first location-plate and described second location-plate, described second location-plate has locating slot, the described dead in line of described locating slot center line and described pressure workpiece spindle, described upper limit spare is positioned at the described second location-plate upside, described upper limit spare one end flexibly connects described second location-plate, and the other end and described second location-plate removably connect.
Adopt the utility model, because measurement mechanism of the present utility model (guide pillar guide pin bushing parts, check-out console) thoroughly separates with pressue device (pressing workpiece component, press member), the distortion inaccuracy that pressue device produces is thoroughly eliminated, by the lead screw pair architecture advances, also eliminated the measuring error that cause in the lead screw pair gap; In order to guarantee measuring accuracy, the steel ball rolling guide pillar guide pin bushing that adopts a pair of high rigidity, magnitude of interference 0.01-0.02mm to cooperate, and connect with the check-out console that hardens and to be one, do not produce small distortion when both guaranteeing pressurized, also guaranteed the dirigibility that seesaws; The axis of the axis of pressure unit, pressure workpiece spindle overlaps with the measuring center of measurement mechanism; Adopt GR﹠amp; R method Due Diligence measuring system of the present utility model, measuring accuracy, stability are higher than existing equipment far away.
Description of drawings
Fig. 1 looks synoptic diagram for the master of original air valve bulb gap detection equipment.
Fig. 1 a is the schematic top plan view one of original air valve bulb gap detection equipment.
Fig. 1 b is the schematic top plan view two of original air valve bulb gap detection equipment.
Fig. 2 is the schematic perspective view of a specific embodiment of the present utility model.
Fig. 3 looks synoptic diagram for the master of specific embodiment shown in Figure 2.
Fig. 4 is the schematic top plan view of specific embodiment shown in Figure 2.
Fig. 5 looks synoptic diagram for the left side of specific embodiment shown in Figure 2.
Fig. 6 is for being used for gas circuit synoptic diagram of the present utility model.
Embodiment
In order more to be expressly understood technology contents of the present utility model, describe in detail especially exemplified by following examples.
See also shown in Fig. 2～5, air valve bulb of the present utility model gap precision measurement apparatus, comprise base plate 1, the two guide pillar guide pin bushing parts 2 that be arranged in parallel, check-out console 3 perpendicular to described base plate 1, be fixed on pressure workpiece component 4 and press member 5 and workpiece positioning element 6 on the described base plate 1, and pressure unit 7 and displacement transducer 8, described guide pillar guide pin bushing parts 2 comprise the guide pin bushing seat 21 that is fixed on the described base plate 1, be arranged in the guide pillar 22 and the ball 23 of described guide pin bushing seat 21, described ball 23 is positioned at described guide pillar 22 sides, described check-out console 3 comprise first surface 31 and with described first surface 31 opposing second surface 32, two described guide pillars 22 are vertically fixed on the end positions on the described first surface 31 respectively, described press member 5 is connected between two described guide pin bushing seats 21 and with described pressure unit 7, the free end of described pressure unit 7 is against described first surface 31 centers, the described check-out console 3 of the axis normal of described pressure unit 7, described pressure workpiece component 4 comprises the pressure workpiece spindle 41 towards described second panel 32, the described dead in line of the axis of described pressure workpiece spindle 41 and described pressure unit 7, described workpiece positioning element 6 is between described second surface 32 and described pressure workpiece component 4, described displacement transducer 8 is fixed on the described guide pin bushing seat 21, and the sounding rod head of described displacement transducer 8 contacts with described check-out console 3.
Above-mentioned guide pillar guide pin bushing parts 2 are the highest assemblies of machining precision of the present utility model, in a specific embodiment of the present utility model, and ball 23 general steel ball, its diameter consistance≤0.00025mm of adopting; HRC62-67; In general whole plastics ball retainers that are riveted in the guide pin bushing seat 21.Can know that guide pin bushing seat 21 has the hole as guide pin bushing, guide pillar 22 adds steel ball and cooperates for interference 0.010-0.020mm rolls with guide pin bushing.Guide pillar 22, guide pin bushing material GCr15, HRC58-60.Require two hole end surface verticality≤0.01mm of guide pin bushing seat 21; The two hole depth of parallelism≤0.01mm, the check-out console 3 (material C r12MoV high alloy tool steel HRC58-60) that two guide pillars, 22 usefulness are quenched connects as one with 6 screws, can roll flexibly in two guide pin bushings, and frictional resistance is very little.
In specific embodiment of the utility model, above-mentioned displacement transducer 8 adopts the 0.001mm displacement transducer, be fixed on a contiguous block on the guide pin bushing holder 21 of the accurate guide pillar guide pin bushing of measurement mechanism parts 2, displacement transducer 8 is h6/G6 with cooperating of contiguous block fixed orifice, after the M3 screw retention, the sounding rod head is contacted with check-out console 3 all the time by displacement transducer 8 contained springs.Damage displacement transducer 8 when preventing to operate, the utility model also installs a stainless steel protective cover additional for it when reality is made.
Preferably, described pressure workpiece component 4 also comprises axle sleeve 42, axle sleeve holder 43 and pressure actuating member 44, described axle sleeve holder 43 is fixed on the described base plate 1, described axle sleeve 42 is fixed in the described axle sleeve holder 43, described pressure workpiece spindle 41 is arranged in described axle sleeve 42, and described pressure workpiece spindle 41 connects described pressure actuating member 44 away from an end of described check-out console 3.In a specific embodiment of the present utility model, press workpiece spindle 41 and axle sleeve 42 tolerance clearance g6/E7; Axle sleeve 42 external diameters cooperate r6/H7 with axle sleeve holder 43 holes, press workpiece spindle 41, axle sleeve 42 to adopt GCr15 bearing steel quenching HRC56-60.Axle sleeve holder 43 materials are 45 steel, modified HB250.The assembling back requires to press workpiece spindle 41 to overlap with measuring center.
More preferably, described pressure actuating member 44 comprises that air valve holds out against cylinder 45 and cylinder floating junction 46, described air valve holds out against the piston rod that cylinder 45 comprises cylinder and is arranged in described cylinder, the described dead in line of the axis of described piston rod and described pressure workpiece spindle 41, described cylinder floating joint 46 connect described piston rod and described pressure workpiece spindle 41 respectively.In a specific embodiment of the present utility model, described cylinder floating joint 46 and described pressure workpiece spindle 41 are connected by screw-threaded engagement, cylinder is fixed on the base plate 1 with two back up pads, and a magnetic switch is respectively installed in front and back in the side of cylinder block groove, is convenient to PLC and gathers the signal that puts in place.Assembling exhaust hood and piston rod center overlap with measuring center.
Preferably, described press member 5 comprises that brake pushrod holds out against cylinder 51, described brake pushrod hold out against cylinder 51 comprise hold out against cylinder 52 and be arranged in described hold out against cylinder 52 hold out against piston rod 53, described piston rod 53 1 ends that hold out against connect described pressure unit 7, the described described dead in line that holds out against the axis and the described pressure unit 7 of piston rod 53.
More preferably, also comprise at least one sensor 54, described sensor 54 is fixed on the described base plate 1, and the measuring head of described sensor 54 and described piston rod 53 free ends that hold out against are equipped with and are used to detect the described position that holds out against piston rod 53.In a specific embodiment of the present utility model, be provided with two sensors 54, come described holding out against on the piston rod 53 free end motion circuits.
In a specific embodiment of the present utility model, also comprise gas-holder 205, described gas-holder 205 is communicated with the described cylinder 52 that holds out against.For guaranteeing the stable of pressure, holding out against at brake pushrod has increased a gas-holder 205 in cylinder 51 gas circuits.The pneumatic diagram that the utility model adopts can be varied, Fig. 6 is for being used for a kind of gas circuit synoptic diagram of the present utility model, and wherein 201 is three linked pieces, and the 202nd, electromagnetic switch valve, the 203rd, accurate reduction valve, the 204th, precision pressure gauge, the 205th, gas-holder, 206 206B be 2 position-3-way solenoid valves, the 207th, one-way throttle valve, the 208th, reduction valve, the 209th, three position five-way valve, the 210th, sound suppressor.
Preferably, also comprise press member moving member 9 and slide plate 55, described press member moving member 9 comprises holder 91 that is fixed on the described base plate 1 and the bull stick 92 that is arranged in described holder 91, has screw thread on the described bull stick 92, described press member 5 is provided with threaded hole 56, described bull stick 92 wears described threaded hole 56 and described threaded hole 56 engagements, the wall of described threaded hole 56 has breach 57 along the axis direction of described bull stick 92, described breach 57 connects by screw, described press member 5 is fixed on the described slide plate 55, described slide plate has the groove that Open Side Down 55 times, have the line slide rail 11 parallel on the described base plate 1 with described bull stick 92, described line slide rail 11 is arranged in described groove, the parallel axes of the axis of described bull stick 92 and described guide pillar 22.The effect of described press member moving member 9 is to regulate brake pushrod according to the length of measured workpiece 100 to hold out against cylinder 51 to the appropriate location, and light, laborsaving when making mobile brake pushrod hold out against cylinder 51, the back locked threaded hole of screw is determined in the position.
In specific embodiment of the utility model, brake pushrod holds out against cylinder 51 and adopts flat pair of bar cylinder, is vertically fixed on the slide plate 55 with L-square, and purpose is to allow displacement transducer 8 as far as possible near measured workpiece 100, reduces measuring error.Two sensor 54 usefulness stainless steel angle block of right angle are fixed on the slide plate 55, can accurately detect piston rod 53 positions that brake pushrod holds out against cylinder 51.Pressure unit 7 usefulness screws are installed on the crossover sub that brake pushrod holds out against cylinder 51, and front end with check-out console 3 contacts with separate, guarantees that measuring error is as far as possible little with the sphere form.
Preferably, also comprise guide pin bushing seat slide block 24 and slide block holder 25, described slide block holder 25 is fixed on the described base plate 1, described slide block holder 25 has chute 26, described guide pin bushing seat slide block 24 is socketed in the described chute 26, described guide pin bushing seat 21 and described guide pin bushing seat slide block 24 are by screw retention, and described chute 26 is parallel to described guide pillar 22.In a specific embodiment of the present utility model, chute 26 is a T type chute, and 24 screens of guide pin bushing seat slide block can only be slided along chute 26 in chute 26 therein, require back two chutes 26 of assembling parallel with workpiece positioning element 6 center lines.Effect be regulate measurement mechanism according to the length of measured workpiece 100 accurate guide pillar guide pin bushing parts 2 to the appropriate location, afterwards even locked guide pin bushing seat 21 of available four screws and guide pin bushing seat slide block 24 are determined in the position.
In a specific embodiment of the present utility model, also comprise reaction spring, described reaction spring is enclosed within on the described sounding rod respectively against described check-out console 3 and described displacement detector 8.The effect of cover reaction spring is to guarantee that check-out console 3 closely contacts with measured workpiece 100 all the time on displacement transducer 8 sounding rods.
Preferably, described workpiece positioning element 6 comprises first location-plate 61, second location-plate 62 and upper limit spare 63, described first location-plate 61 and described second location-plate 62 are fixed on and are parallel to described check-out console 3 on the described base plate 1, described first location-plate 61 and described second location-plate 62 be suitable distance at interval, described pressure workpiece spindle 41 free ends wear described first location-plate 61 between described first location-plate 61 and described second location-plate 62, described second location-plate 62 has locating slot 64, the described dead in line of described locating slot 64 center lines and described pressure workpiece spindle 41, described upper limit spare 63 is positioned at described second location-plate, 62 upsides, described upper limit spare 63 1 ends flexibly connect described second location-plate 62, and the other end and described second location-plate 62 removably connect.In a specific embodiment of the present utility model, first location-plate 61 and second location-plate 62 adopt the Cr12MoV high alloy tool steel, quenching HRC60-62, locating slot 64 and measured workpiece 100 tolerance clearance 0.02mm～0.04mm.Described upper limit spare 63 is upper limit rotary pressure plate devices, comprise pressing plate, pressing plate one end and second location-plate are coupling, and make pressing plate to pivot, the other end and 62 clampings of second location-plate prevent that mainly protuberance causes measuring error to increase to measured workpiece 100 around the bulb anglec of rotation is excessive.During assembling, should guarantee that locating slot 64 center lines overlap with measuring center, first location-plate 61 is vertical with measuring center with second location-plate, 62 end faces.
The utility model is used to detect the gap in FCV riveted joint rear push-rod bulb and air valve ball hole, during work; get measured workpiece 100; i.e. FCV parts that riveted joint is good; vinyl cover, the spring leaf of head are removed, roughly proofread and correct right alignment at 2mm to be placed on after interior in the workpiece positioning element 6, air valve is at second location-plate 62 and press between workpiece spindle 41 free ends; push rod wears described locating slot 64, and rotary pressure plate is depressed; Unscrew the screw between guide pin bushing seat 21 and the guide pin bushing seat slide block 24, sliding guide sleeve seat slide block 24, adjust guide pin bushing seat slide block 24 and slide block holder 25 relative positions, and then the position of adjustment guide pillar 22, make the second surface 32 of coupled check-out console 3 vertically be close to measured workpiece 100, assurance guide pillar 22 can be noted the depth of parallelism between assurance check-out console 3 and first location-plate 61 and the 2nd the plate 62 to away from the flexible displacement 4～5mm of measured workpiece 100 directions distance, screws screw; Unclamp the screw on the threaded hole 56, rotation bull stick 92 is adjusted press member 5 to the appropriate location, screws screw then; The ventilation source, adjusting the source of the gas total gas pressure is 6bar, opening air valve holds out against cylinder 45 and measured workpiece 100 is pressed in the workpiece positioning element 6 (air valve holds out against the power of cylinder 45 can be by 208 controls of the accurate reduction valve in the gas circuit, draw together air valve hold out against cylinder 45 speed can be by two one-way throttle valves on the cylinder 207 control, brake pushrod holds out against cylinder 51 and also is furnished with the said function element), then brake pushrod holds out against cylinder 51 pressure parameter is exerted pressure to measured workpiece 100 by check-out console 3 according to the rules that (this moment, the measuring head of displacement transducer 8 contacted with check-out console 3 all the time, for guaranteeing the stable of pressure, holding out against at brake pushrod has increased a gas-holder 205 in cylinder 51 gas circuits), when pressure unit 7 when to detect pressure be 450N+/-10%, displacement transducer 8 readings are put 0 by the PLC controller that links to each other with displacement transducer 8; After in stable condition, brake pushrod holds out against cylinder 51 and returns (being return after about 2 seconds of stabilization time at the set condition that begins to count after displacement transducer 8 zero setting by the PLC program), under measured workpiece 100 portion's spring force effect within it, overcome the spring force of force of rolling friction, reaction spring and the displacement transducer 8 of guide pillar guide pin bushing, heading on check-out console 3 moves together, bulb gap up to measured workpiece 100 moves to the right side (from Fig. 2) fully from the left side, till check-out console 3 is slack.Reading on this moment displacement transducer 8 display screens is the bulb gap width of measured workpiece 100.Need to prove that the gap width and the actual value of this measurement device are inconsistent, is because micro-deformation causes behind measured workpiece 100 pressurizeds, irrelevant with measurement mechanism.Recomputate gap width after measured workpiece 100 deformation values should being measured.
In order to improve robotization and easy and simple to handle, above-mentioned each parts can connect each auxiliary and carry out remote-controlled operation, therefore, the utility model can also comprise a series of auxiliaries, comprise worktable, pneumatic element, electric cabinet, touch-screen and safety screen five parts, worktable is used for fixing above-mentioned measurement mechanism, pneumatic element, electric cabinet, touch-screen and safety screen.Pneumatic element is exercises topworkies.Electric cabinet, touch-screen are as the control gear of this device.The nitrogen spring that safety screen is opened by electronic security(ELSEC) door lock, photoelectricity soft-touch control, organic glass transparent window and door constitutes.Can adopt electromagnetic switch valve 206,209 to carry out far distance controlled by touch-screen as above-mentioned accurate reduction valve 203,208, sensor 54, pressure unit 7 and displacement transducer 8 adopt the PLC controllers to carry out far distance controlled by touch-screen.Behind the ventilation source, on electronic touch screen, open the electromagnetic switch valve 209 that control air valve holds out against cylinder 45, adjust the force value that requires that air pressure that accurate reduction valve 208 makes air valve hold out against cylinder 45 reaches measured workpiece 100, determine by the tensimeter numerical value * cylinder compression area of accurate reduction valve; Cover safety door then, on electronic touch screen, open the electromagnetic switch valve 206 that the control brake push rod holds out against cylinder 51, the pressure unit 7 that allows brake pushrod hold out against piston rod 53 front ends of cylinder 51 pushes away check-out console 3 forward and withstands measured workpiece 100.Force value according to 7 demonstrations of electronic touch screen upward pressure transmitter, accurately adjust the accurate reduction valve 203 that brake pushrod holds out against cylinder 51, until the pressure of pressure unit 7 indicator gauges is 450N+/-10% o'clock, then with displacement transducer 8 zero setting, brake pushrod holds out against cylinder 51 and returns, guide pillar 22 slides until stopping, and reads displacement transducer 8 readings, and reading is air valve bulb gap.
And, adopted the auxiliary that improves robotization after, the technological operation flow process can specifically be reduced to: get the FCV parts that riveted joint is good, promptly unit under test 100, are placed on the workpiece positioning element 6, locate firm and locate with upper limit rotary pressure plate device; Shut safety protection gate, shutter is transparent (shutter is closed back equipment and could be moved); Touch-screen is converted to the Automatic Cycle pattern by manual mode, presses the photoelectricity cycling switch, air valve holds out against cylinder 45 and at first holds out against air valve, triggers travel switch simultaneously; After travel switch triggered, brake pushrod held out against cylinder 51 and advances, and overcame the volute spring power behind the brake pushrod, held out against brake pushrod, bulb and ball was cheated be pressed onto a side fully and closely contact; Trigger sensor 54 simultaneously the signal that puts in place is provided, PLC begins the force value of gaging pressure transmitter 7; When pressure was shown as 450N+/-10%, automatically with LDT (displacement transducer 8) zero setting, PLC time-delay 1～2 second was so that pressure stability; The take-off the brake push rod holds out against cylinder 51, crosses the reading that appropriate time reads LDT, and this reading is gap, ball hole; Unclamp air valve and hold out against cylinder 45, open safety protection gate, take off measured workpiece 100.So far, all measuring process finishes.Aforesaid operations carries out basically automatically, operates very easy.
Above-mentioned pressure unit 7 (Load Cell) and Displaying Meter monitoring brake pushrod pressure thereof, brand can be selected BURSTER; Displacement transducer 8 (LDT) brand can be selected SONY, be equipped with the LDT calibrating device (with the SGM980 workpiece be benchmark+/-4mm); In the test process, must guarantee that brake pushrod and air valve reference field verticality are in 1 °; Test fixture must be able to adapt to the brake pushrod of different length, therefore designed can adjusting position mechanism's (comprise press member moving member 9 and slide plate 55, guide pin bushing seat slide block 24 and slide block holder 25, or the like); The PLC controller can be selected the Micrologix 1500 of AB company for use; Touch-screen can be selected the Panelview 600 of AB company for use.
The maximum difference of the utility model and former overseas equipment is device for exerting and measurement mechanism separate, accomplishes mutually noninterfere, like this measuring error that causes with regard to the distortion of having avoided owing to stressed member.Measurement mechanism adopts the accurate two guide pillar guide pin bushings of high rigidity as the moving component that moves with measured workpiece 100 in addition, under the 0.001mm displacement transducer cooperates, can accurately reflect the minute movement distance of measured workpiece 100, thereby accurately measure the gap in the riveting bulb.
To sum up, the stressed back of moving component that air valve bulb of the present utility model gap precision measurement apparatus has been eliminated existing equipment produces the measuring error that elastic deformation causes, and the measuring error that causes of the screw pair gap of having eliminated existing equipment, measuring accuracy height, good stability.
In this instructions, the utility model is described with reference to its certain embodiments.But, still can make various modifications and conversion obviously and not deviate from spirit and scope of the present utility model.Therefore, instructions and accompanying drawing are regarded in an illustrative, rather than a restrictive.
Claims (10)
1. air valve bulb gap precision measurement apparatus, it is characterized in that, comprise base plate, the two guide pillar guide pin bushing parts that be arranged in parallel, check-out console perpendicular to described base plate, be fixed on pressure workpiece component and press member and workpiece positioning element on the described base plate, and pressure unit and displacement transducer, described guide pillar guide pin bushing parts comprise the guide pin bushing seat that is fixed on the described base plate, be arranged in the guide pillar and the ball of described guide pin bushing seat, described ball is positioned at described guide pillar side, described check-out console comprise first surface and with described first surface opposing second surface, two described guide pillars are vertically fixed on the end positions on the described first surface respectively, described press member is connected between two described guide pin bushing seats and with described pressure unit, the free end of described pressure unit is against described first surface center, the described check-out console of the axis normal of described pressure unit, described pressure workpiece component comprises the pressure workpiece spindle towards described second panel, the described dead in line of the axis of described pressure workpiece spindle and described pressure unit, described workpiece positioning element is between described second surface and described pressure workpiece component, described displacement transducer is fixed on the described guide pin bushing seat, and the sounding rod head of described displacement transducer contacts with described check-out console.
2. air valve bulb according to claim 1 gap precision measurement apparatus, it is characterized in that, described pressure workpiece component also comprises axle sleeve, axle sleeve holder and pressure actuating member, described axle sleeve holder is fixed on the described base plate, described axle sleeve is fixed in the described axle sleeve holder, described pressure workpiece spindle is arranged in described axle sleeve, and described pressure workpiece spindle connects described pressure actuating member away from an end of described check-out console.
3. air valve bulb according to claim 2 gap precision measurement apparatus, it is characterized in that, described pressure actuating member comprises that air valve holds out against cylinder and cylinder floating junction, described air valve holds out against the piston rod that cylinder comprises cylinder and is arranged in described cylinder, the described dead in line of the axis of described piston rod and described pressure workpiece spindle, described cylinder floating joint connect described piston rod and described pressure workpiece spindle respectively.
4. air valve bulb according to claim 3 gap precision measurement apparatus is characterized in that described cylinder floating joint is connected by screw-threaded engagement with described pressure workpiece spindle.
5. air valve bulb according to claim 1 gap precision measurement apparatus, it is characterized in that, described press member comprises that brake pushrod holds out against cylinder, described brake pushrod holds out against cylinder and comprises and hold out against cylinder and be arranged in the described piston rod that holds out against that holds out against cylinder, described piston rod one end that holds out against connects described pressure unit, the described described dead in line that holds out against the axis and the described pressure unit of piston rod.
6. air valve bulb according to claim 5 gap precision measurement apparatus, it is characterized in that, also comprise at least one sensor, described sensor is fixed on the described base plate, and the measuring head of described sensor and the described piston rod free end that holds out against are equipped with and are used to detect the described position that holds out against piston rod.
7. air valve bulb according to claim 1 gap precision measurement apparatus, it is characterized in that, also comprise press member moving member and slide plate, described press member moving member comprises the holder that is fixed on the described base plate and is arranged in the bull stick of described holder, has screw thread on the described bull stick, described press member is provided with threaded hole, described bull stick wears described threaded hole and the engagement of described threaded hole, the wall of described threaded hole has breach along the axis direction of described bull stick, described breach connects by screw, described press member is fixed on the described slide plate, has the groove that Open Side Down under the described slide plate, have the line slide rail parallel with described bull stick on the described base plate, described line slide rail is arranged in described groove, the axis of described bull stick and the parallel axes of described guide pillar.
8. air valve bulb according to claim 1 gap precision measurement apparatus, it is characterized in that, also comprise guide pin bushing seat slide block and slide block holder, described slide block holder is fixed on the described base plate, described slide block holder has chute, described guide pin bushing seat slide block set is connected in the described chute, and described guide pin bushing seat and described guide pin bushing seat slide block are by screw retention, and described chute is parallel to described guide pillar.
9. air valve bulb according to claim 1 gap precision measurement apparatus is characterized in that, also comprises reaction spring, and described reaction spring is enclosed within on the described sounding rod respectively against described check-out console and described displacement detector.
10. air valve bulb according to claim 1 gap precision measurement apparatus, it is characterized in that, described workpiece positioning element comprises first location-plate, second location-plate and the upper limit spare, described first location-plate and described second location-plate are fixed on and are parallel to described check-out console on the described base plate, described first location-plate and described second location-plate be suitable distance at interval, described pressure workpiece spindle free end wears described first location-plate between described first location-plate and described second location-plate, described second location-plate has locating slot, the described dead in line of described locating slot center line and described pressure workpiece spindle, described upper limit spare is positioned at the described second location-plate upside, described upper limit spare one end flexibly connects described second location-plate, and the other end and described second location-plate removably connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201529173U CN201281591Y (en) | 2008-09-10 | 2008-09-10 | Precision measurement apparatus for air valve ball head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201529173U CN201281591Y (en) | 2008-09-10 | 2008-09-10 | Precision measurement apparatus for air valve ball head |
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| Publication Number | Publication Date |
|---|---|
| CN201281591Y true CN201281591Y (en) | 2009-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201529173U Expired - Fee Related CN201281591Y (en) | 2008-09-10 | 2008-09-10 | Precision measurement apparatus for air valve ball head |
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| Country | Link |
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| CN (1) | CN201281591Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607400A (en) * | 2012-03-23 | 2012-07-25 | 合肥工业大学 | Precision spherical hinge clearance-measuring instrument and measurement method |
| CN108759635A (en) * | 2018-06-12 | 2018-11-06 | 芜湖恒安钢结构有限公司 | A kind of shipbuilding L-shaped part arrangement for measuring verticality |
| CN113390708A (en) * | 2021-06-29 | 2021-09-14 | 东风耐世特转向系统(武汉)有限公司 | Detection tool for detecting rigidity of riveting structure |
-
2008
- 2008-09-10 CN CNU2008201529173U patent/CN201281591Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607400A (en) * | 2012-03-23 | 2012-07-25 | 合肥工业大学 | Precision spherical hinge clearance-measuring instrument and measurement method |
| CN102607400B (en) * | 2012-03-23 | 2013-11-27 | 合肥工业大学 | Precision spherical hinge clearance-measuring instrument and measurement method |
| CN108759635A (en) * | 2018-06-12 | 2018-11-06 | 芜湖恒安钢结构有限公司 | A kind of shipbuilding L-shaped part arrangement for measuring verticality |
| CN113390708A (en) * | 2021-06-29 | 2021-09-14 | 东风耐世特转向系统(武汉)有限公司 | Detection tool for detecting rigidity of riveting structure |
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| C14 | Grant of patent or utility model | ||
| 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: 20090729 Termination date: 20160910 |