CN207963827U - A kind of contact-type 3 D spotting scaming gauge head - Google Patents

Abstract

A kind of contact-type 3 D spotting scaming gauge head is made of moving cell, sensing unit, position-limiting unit, signal processing unit and installation system.The moving cell includes probe, lower maneuvering board, lower response agency, Z-direction transmission mechanism, X to transmission mechanism, Y-direction transmission mechanism, upper maneuvering board and upper response agency；The sensing unit is by Z-direction linear displacement transducer, X is formed to linear displacement transducer and Y-direction linear displacement transducer, three center sensor lines are mutually parallel, the line of cross-section center constitutes isosceles right triangle, thus by the bulb of probe end along X, Y, the displacement in tri- directions Z is obtained by three sensors and is converted into electric signal output respectively, realize simple and practical mechanical decoupling, gauge head is set to have space availability ratio high, compact, it is simple in structure, the ability of excellent dynamic response performance and the large complicated carved part profile size of measurement, and measurement accuracy can be improved.

Description

A kind of contact-type 3 D spotting scaming gauge head

Technical field

The utility model belongs to workpiece coordinate scanning survey field, is related to a kind of for three coordinate measuring machine or digital control processing Supercentral contact-type 3 D spotting scaming gauge head.

Background technology

Modern manufacturing industry field, it is larger to the high-efficiency and precision measurement demand amount of large complicated carved part profile size, lead to It is often used three coordinate measuring machine to measure workpiece surface profile, the three dimensional space coordinate to obtain workpiece surface each point is joined Number.In three coordinate measuring machine, the component of core the most is the measuring probe (abbreviation gauge head) for detection workpieces surface.The survey Head can be divided into contact and contactless two major classes, and wherein contact measuring head can be subdivided into touch trigger probe and scanning probe. Scanning probe has higher measuring speed compared with touch trigger probe, is suitable for the precision of large complicated carved part entirety profile It efficiently measures, but because of its complicated in mechanical structure, it is mutually orthogonal frequently with tandem guiding mechanism or displacement sensor sensing direction Parallel guiding mechanism, lead to that gauge head is bulky, difficulty of processing is big, manufacturing cost is high；Furthermore because complicated heaviness is led It causes gauge head dynamic response performance poor, can not continuously, quickly track the larger curved surface part of curvature mutation, easily collide and take off Mould.

Chinese patent ZL 201310296616.3 discloses a kind of contact-type 3 D scanning feeler, and the gauge head is using multigroup The tandem guiding mechanism of parallel spring composition, complicated in mechanical structure, low space utilization, bulky, measurement a direction It can be influenced by other both direction measuring devices when displacement, cause its performance unstable, precision is relatively low；The equipment is not anti- Only probe swings the position-limit mechanism of position of overstepping the extreme limit, can not effective protection gauge head so that when probe encounters friction of workpiece coefficient It will appear overvoltage, demoulding and oscillation when the unfavorable factors such as excessive or curved surface is unsmooth, even result in measuring apparatus damage.

Utility model content

The purpose of the utility model is to overcome the deficiencies in the prior art, provide compact-sized one kind, compact, dynamic Fast contact-type 3 D spotting scaming gauge head is responded, in order to measure the three-dimensional information on complex part surface, and improves measurement essence The safety of degree and gauge head work.

Contact-type 3 D spotting scaming gauge head described in the utility model, by moving cell, sensing unit, position-limiting unit, letter Number processing unit and installation system composition for installing moving cell, sensing unit, position-limiting unit, signal processing unit；Institute State moving cell include probe, lower maneuvering board, lower response agency, lower fixinig plate, Z-direction transmission mechanism, X to transmission mechanism, Y-direction pass Motivation structure, upper maneuvering board, upper response agency and upper fixinig plate, lower response agency and upper response agency contain elastic component；It is described Sensing unit is made of Z-direction linear displacement transducer, X to linear displacement transducer and Y-direction linear displacement transducer；The limit Unit is made of Z-direction limit sensing mechanism, X to limit sensing mechanism and Y-direction limit sensing mechanism；The signal processing unit packet Include signal processor and circuit board；The installation system includes shell, head cover, bottom cover, the first support column, the second support column, Three support columns and support plate, the first support column are at least three, the quantity and the first support of the second support column and third support column The quantity of column is identical, bottom cover centre be provided with for the probe in moving cell by centre bore；

Above-mentioned each component, the installation combination of device are as follows：

The bottom cover is detachably connected with shell lower end；Each first support column lower end respectively with lower response agency and bottom cover Periphery combine, lower response agency is removably fixed on bottom cover, each first upper end of support column respectively with upper links-and-links machine Structure periphery connects, and is fixed on upper response agency is detachable on the first support column；Each second support column lower end respectively with it is upper Response agency periphery connects, and the upper end of each second support column is connect with support plate periphery respectively, and support plate is detachable solid It is scheduled on the second support column；Each third support column lower end is connect with support plate periphery respectively, each third upper end of support column point It does not connect with the circuit board perimeter, is fixed on circuit board is detachable on third support column；

The lower maneuvering board, lower fixinig plate are located at the top and bottom of lower response agency, and with lower response agency institute The elastic component connection contained；The upper maneuvering board, upper fixinig plate are located at the bottom surface and top surface of response agency, and with upper reply Elastic component connection contained by mechanism；The center of following maneuvering board is that origin establishes three-dimensional cartesian coordinate system, the Z-direction transmission mechanism Mounted on the top surface of lower maneuvering board, center line is overlapped with the Z axis of three-dimensional cartesian coordinate system, and the upper end is connect with upper maneuvering board； The X is mounted on lower movement plate top surface to transmission mechanism, and the centerline parallel of center line and Z-direction transmission mechanism is simultaneously sat with right angle The X-axis intersection of mark system；The Y-direction transmission mechanism is mounted on lower movement plate top surface, the center line of center line and Z-direction transmission mechanism Parallel and with rectangular coordinate system Y-axis intersects, and distance of the center line away from rectangular coordinate system origin and X are into transmission mechanism The distance of heart line-spacing rectangular coordinate system origin is equal；

The Z-direction linear displacement transducer is mounted on the support plate, and installation site should be such that its center line is driven with Z-direction The center line of mechanism overlaps, and the kinetoplast of Z-direction linear displacement transducer is connect with Z-direction transmission mechanism upper end；The X is to straight-line displacement Sensor is mounted on upper maneuvering board, and installation site should be such that its center line is overlapped to the center line of transmission mechanism with X, and X is to straight line The kinetoplast of displacement sensor is connect with X to transmission mechanism upper end；The Y-direction linear displacement transducer is mounted on upper maneuvering board, Installation site should be such that its center line and the center line of Y-direction transmission mechanism overlaps, and kinetoplast and the Y-direction of Y-direction linear displacement transducer pass The upper end of motivation structure connects；

The Z-direction limit sensing mechanism is mounted on upper response agency and upper fixinig plate, and the X pacifies to limit sensing mechanism Mounted in upper maneuvering board and X on transmission mechanism, the Y-axis limits sensing mechanism on upper maneuvering board and Y-direction transmission mechanism；

The probe lower end is bulb, and the upper end of probe is acted on by magnetic-adsorption to be connect with lower maneuvering board bottom surface, is connected Position should be such that its center line and the center line of Z-direction transmission mechanism overlaps, and probe lower end passes through the centre bore of bottom cover to stretch out, and is located at institute It states except shell；

On circuit boards, displacement signal processor is used to sense to Z-direction straight-line displacement institute's displacement signal processor installation Device, X are provided to linear displacement transducer, Y-direction linear displacement transducer starts pumping signal, and will come from Z-direction straight-line displacement and pass Sensor, X turn to the displacement electric signal of the mark measured workpiece surface parameter of linear displacement transducer, Y-direction linear displacement transducer Turn to the processing system that linear voltage difference signal sends three coordinate measuring machine or numerical control machining center to；

The head cover is mounted on shell upper end, and is detachably connected with shell upper end.

In above-mentioned contact-type 3 D spotting scaming gauge head, the elastic component that lower response agency contains is first " cross " shape spring Piece, lower response agency are composed of the first " cross " shape spring leaf and two the first reed fixed covers, first " cross " shape bullet Reed is mounted between two the first reed fixed covers, and the center portion thereof position is provided with through-hole；The elastic component that upper response agency contains is Second " cross " shape spring leaf, upper response agency combined by the second " cross " shape spring leaf and two the second reed fixed covers and At second " cross " shape spring leaf is mounted between two the second reed fixed covers, and the center portion thereof position is provided with through-hole.

In above-mentioned contact-type 3 D spotting scaming gauge head, the Z-direction transmission mechanism is by the first fixed seat, the first Elastic Steel Silk, the first moving lever and the first knock-off joint composition, the first fixed seat are mounted on lower movement plate top surface, center line and three-dimensional right angle The Z axis of coordinate system overlaps, and the first elastic wire is fixed in the first fixed seat, the lower end of the first moving lever and the first elastic wire Connection, upper end are connect with the first knock-off joint lower end, and the upper end of the first knock-off joint is for straight with Z-direction in upper maneuvering board and sensing unit The kinetoplast of linear movement pick-up connects, and when combination should make the center line of the first elastic wire, the first moving lever and the first knock-off joint It is overlapped with the center line of the first fixed seat；The X is to transmission mechanism by the second fixed seat, the second elastic wire, the second moving lever It is formed with the second knock-off joint, the second fixed seat is mounted on lower movement plate top surface, and the center line of center line and the first fixed seat is put down Row simultaneously intersect with the X-axis of rectangular coordinate system, and the second elastic wire is fixed in the second fixed seat, the lower end of the second moving lever and the The connection of two elastic wires, upper end are connect with the second knock-off joint lower end, the upper end of the second knock-off joint for X in sensing unit to straight The kinetoplast of linear movement pick-up connects, and when combination should make the center line of the second elastic wire, the second moving lever and the second knock-off joint It is overlapped with the center line of the second fixed seat；The Y-direction transmission mechanism is by third fixed seat, third elastic wire, third moving lever It is formed with third knock-off joint, third fixed seat is mounted on lower movement plate top surface, and the center line of center line and the first fixed seat is put down Row simultaneously intersects with the Y-axis of rectangular coordinate system, and distance of the center line of third fixed seat away from rectangular coordinate system origin is consolidated with second Distance of the center line of reservation away from rectangular coordinate system origin is equal, and third elastic wire is fixed in third fixed seat, third fortune The lower end of lever connect with third elastic wire, the connection of upper end and third knock-off joint lower end, the upper end of third knock-off joint be used for The kinetoplast connection of Y-direction linear displacement transducer, when combination, should make third elastic wire, third moving lever and third in sensing unit The center line of knock-off joint is overlapped with the center line of third fixed seat.

In above-mentioned contact-type 3 D spotting scaming gauge head, the Z-direction limits sensing mechanism by collets, the first position-limiting spring leaf With the first limit contact composition, collets are mounted on the periphery of upper response agency top surface, and the first limit contact is mounted on upper fixation Piece top surface, the first position-limiting spring leaf are strip reed, and one end is mounted on collets, and cantilever end is located on the first limit contact Side；The X to limit sensing mechanism and Y-direction limit sensing mechanism by dead ring, the second position-limiting spring leaf, third position-limiting spring leaf, touch Point installation sheet, the second limit contact, connecting seat, locking cap and third limit contact composition, the second position-limiting spring leaf, third limit spring Piece and contact installation sheet are " L " shape sheet body that two arms is formed, and two-arm intersection area is provided with and Z-direction transmission mechanism combination Suit hole；Connecting seat is mounted on upper maneuvering board bottom surface and is sleeved on Z-direction transmission mechanism, the second position-limiting spring leaf, contact installation Piece, third position-limiting spring leaf are sleeved on Z-direction transmission mechanism successively from top to bottom；Dead ring is two, is sleeved on Z-direction transmission mechanism On, and be located between the second position-limiting spring leaf and contact installation sheet, between contact installation sheet and third position-limiting spring leaf；Locking cap It is sleeved on Z-direction transmission mechanism, the upper end is contacted with third position-limiting spring leaf, is fastened third position-limiting spring leaf, contact by screw Installation sheet, the second position-limiting spring leaf and dead ring are fixed；The one arm end of contact installation sheet is connect with X to transmission mechanism, another Arm end is connect with Y-direction transmission mechanism, and the second limit contact is mounted on the arm that contact installation sheet is connect with X to transmission mechanism On, and between the second position-limiting spring leaf and third position-limiting spring leaf, third limits contact and is mounted on contact installation sheet and Y-direction transmission On the arm of mechanism connection, and between the second position-limiting spring leaf and third position-limiting spring leaf；First limit contact, the described in when use Two limit contacts and third limit contact are electrically connected with the control system of three coordinate measuring machine or numerical control machining center respectively.

In above-mentioned contact-type 3 D spotting scaming gauge head, the preferred structure of the signal processing unit is also to add voltage stabilizing Device, the first potentiometer and the second potentiometer, and institute's displacement signal processor, the first potentiometer, the second potentiometer are three； Voltage-stablizer, the first potentiometer and the installation of the second potentiometer are on circuit boards；Voltage-stablizer will be for that will be supplied at three displacement signals The voltage stabilization of device is managed in set range；Three the first potentiometers are respectively used to three displacement signal processors of adjusting Enlargement ratio, three the second potentiometers are respectively used to adjust the voltage bias of three displacement signal processors；Three displacement signals Processor is respectively used to provide startup to linear displacement transducer, Y-direction linear displacement transducer to Z-direction linear displacement transducer, X Pumping signal, and respectively by from Z-direction linear displacement transducer, X to linear displacement transducer, Y-direction linear displacement transducer The displacement electric signal of mark measured workpiece surface parameter is converted into linear voltage difference signal and sends three coordinate measuring machine or numerical control to The processing system of machining center.

In above-mentioned contact-type 3 D spotting scaming gauge head, the installation system further includes sealing ring, and the sealing ring is located at Between bottom cover and the contact surface of shell lower end, to prevent dust, greasy dirt from entering in shell.

In above-mentioned contact-type 3 D spotting scaming gauge head, Z-direction linear displacement transducer, X are to linear displacement transducer and Y-direction The sensing modality of linear displacement transducer can be that inductance type linear displacement transducer, condenser type linear displacement transducer or optics are straight Linear movement pick-up.

Above-mentioned contact-type 3 D spotting scaming gauge head, between the first position-limiting spring leaf cantilever end bottom surface and the first limit contact Spacing is the restriction range that probe bulb moves upwards；Second position-limiting spring leaf bottom surface limits contact with the second limit contact, third Between spacing be positive torsion of the probe bulb to X-axis or Y-axis restriction range；Third position-limiting spring leaf top surface and the second limit Spacing between contact, third limit contact is the restriction range that probe bulb is reversed to the negative sense of X-axis or Y-axis.

Compared with prior art, the utility model has the advantages that：

1, since contact-type 3 D spotting scaming gauge head described in the utility model uses three linear displacement transducer conducts Measuring cell, using two maneuvering boards and response agency, by the measurement of probe bulb Z-direction displacement and X to displacement, Y-direction displacement Measurement is separated, it is made not interfere with each other between each other, and three center sensor lines are mutually parallel, the line structure of cross-section center At isosceles right triangle, to which the displacement by the bulb of probe end along tri- directions X, Y, Z passes through three sensors respectively Obtain and be converted into electric signal output, realize simple and practical mechanical decoupling, thus the gauge head have space availability ratio it is high, Compact-sized, dynamic response performance is good and measures the ability of large complicated carved part profile size, and measurement accuracy can be improved (measure the linearity and be less than ± 0.05%) and reduce volume (with existing tandem guiding mechanism or displacement sensor sensing direction phase The gauge head of mutual orthogonal parallel guiding mechanism is compared, and volume can at least reduce half).

2, since contact-type 3 D spotting scaming gauge head described in the utility model is provided with position-limiting unit, when probe encounters work When the unfavorable factors such as part friction coefficient is excessive or curved surface is unsmooth are more than the range limited, can in time by three coordinate measuring machine or Numerical control machining center is braked, and is prevented probe bulb from swinging and is overstepped the extreme limit position and damage gauge head, is conducive to improve service life.

3, since the probe pin upper ends in contact-type 3 D spotting scaming gauge head described in the utility model are made by magnetic-adsorption It is connect with lower maneuvering board bottom surface, thus when encountering exceedingly odious Test Cycle or unpredictable factor, probe can take off in time It falls, is detached with gauge head main body, to avoid the damage of primary structure in gauge head.

4, the installation architecture in contact-type 3 D spotting scaming gauge head described in the utility model is reasonable, single convenient for movement The installation combination of member, sensing unit, position-limiting unit, signal processing unit.

5, since the installation system in contact-type 3 D spotting scaming gauge head described in the utility model is provided with sealing ring, because And dust can be prevented, greasy dirt enters damage moving cell, sensing unit, position-limiting unit, signal processing unit in shell.

Description of the drawings

Fig. 1 is the structural schematic diagram of contact-type 3 D spotting scaming gauge head described in the utility model；

Fig. 2 is the three-dimensional cartesian coordinate system signal that contact-type 3 D spotting scaming gauge head described in the utility model is established Figure；

Fig. 3 is moving cell and linear displacement transducer in contact-type 3 D spotting scaming gauge head described in the utility model Explosive view；

Fig. 4 is the A-A sectional views of Fig. 1；

Fig. 5 be contact-type 3 D spotting scaming gauge head described in the utility model moving cell in lower maneuvering board, lower reply The combination diagram of mechanism and probe；

Fig. 6 be contact-type 3 D spotting scaming gauge head described in the utility model position-limiting unit in Z-direction limit sensing mechanism Structural schematic diagram；

Fig. 7 be contact-type 3 D spotting scaming gauge head described in the utility model position-limiting unit in X to Y-direction limit sense The structural schematic diagram of mechanism；

Fig. 8 is the stereogram of Fig. 7；

Fig. 9 is the Z-direction motion principle schematic diagram of contact-type 3 D spotting scaming gauge head middle probe described in the utility model；

Figure 10 be contact-type 3 D spotting scaming gauge head middle probe described in the utility model X to or Y-direction twist motion it is former Manage schematic diagram；

Figure 11 be contact-type 3 D spotting scaming gauge head middle probe bulb X described in the utility model to or Y-direction displacement scale Relation schematic diagram；

Figure 12 is that contact-type 3 D spotting scaming gauge head middle probe bulb Z-direction displacement scale relationship described in the utility model is shown It is intended to；

Figure 13 be in contact-type 3 D spotting scaming gauge head described in the utility model a kind of structure of signal processing unit and Mounting means schematic diagram.

In figure, 1- probes, 1.1- bulbs, maneuvering board under 2-, 2.1- magnets, response agency under 3-, 3.1 first reeds fix Lid, 3.2- first " cross " shape spring leaf, fixinig plate under 4-, 5-Z is to transmission mechanism, the first fixed seats of 5.1-, the first bullets of 5.2- Property steel wire, the first moving levers of 5.3-, the first knock-off joints of 5.4-, 6-X is to transmission mechanism, the second fixed seats of 6.1-, the second bullets of 6.2- Property steel wire, the second moving levers of 6.3-, the second knock-off joints of 6.4-, 7-Y is to transmission mechanism, 7.1- third fixed seats, 7.2- third bullets Property steel wire, 7.3- third moving levers, 7.4- third knock-off joints, the upper maneuvering boards of 8-, the upper response agencies of 9-, the second reeds of 9.1- are fixed Lid, 9.2- second " cross " shape spring leaf, the upper fixinig plates of 10-, 11-Z are sensed to linear displacement transducer, 12-X to straight-line displacement Device, 13-Y is to linear displacement transducer, and 14-Z is to limit sensing mechanism, 14.1- collets, the first position-limiting spring leafs of 14.2-, 14.3- first limit contact, 15-X to limit sensing mechanism, 15.1- dead rings, the second position-limiting spring leafs of 15.2-, 15.3- thirds Position-limiting spring leaf, the contacts 15.4- installation sheet, 15.5- second limit contact, and 15.6- connecting seats, 15.7- locking caps, 16-Y is to limit Sensing mechanism, 16.1- thirds limit contact, 17- support plates, 18- signal processing units, 18.1- displacement signal processors, 18.2- voltage-stablizers, the first potentiometers of 18.3-, the second potentiometers of 18.5-, 18.4- circuit boards, 19- bottom covers, 20- sealing rings, 21- Shell, 22- head covers, the first support columns of 23-, the second support columns of 24-, 25- third support columns.

Specific implementation mode

By way of example and in conjunction with the accompanying drawings to contact-type 3 D spotting scaming gauge head described in the utility model and use Method and measuring principle are described further.

Contact-type 3 D spotting scaming gauge head described in the present embodiment is a component of three coordinate measuring machine, and when use installs On three coordinate measuring machine.

The structure of contact described in the present embodiment is as shown in Figure 1, by moving cell, sensing unit, position-limiting unit, signal Manage unit 18 and the installation system composition for installing moving cell, sensing unit, position-limiting unit, signal processing unit.

The moving cell is as shown in Figure 1, Figure 3, including probe 1, lower maneuvering board 2, lower response agency 3, lower fixinig plate 4, Z To transmission mechanism 5, X to transmission mechanism 6, Y-direction transmission mechanism 7, upper maneuvering board 8, upper response agency 9 and upper fixinig plate 10；Probe 1 Lower end is bulb 1.1, and lower 2 bottom surface of maneuvering board is equipped with the magnet 2.1 combined with probe pin upper ends；Lower response agency 3 is by first " ten Word " shape spring leaf 3.2 and two the first reed fixed covers 3.1 are composed, the first reed fixed cover 3.1 be ring cover, first " cross " shape spring leaf is mounted between two the first reed fixed covers, and the center portion thereof position is provided with through-hole；Upper response agency 9 by Second " cross " shape spring leaf 9.2 and two the second reed fixed covers 9.1 are composed, and the second reed fixed cover 9.1 is annular Lid, second " cross " shape spring leaf are mounted between two the second reed fixed covers, and the center portion thereof position is provided with through-hole；Z-direction passes Motivation structure 5 is made of the first fixed seat 5.1, the first elastic wire 5.2, the first moving lever 5.3 and the first knock-off joint 5.4, and X is to biography Motivation structure 6 is made of the second fixed seat 6.1, the second elastic wire 6.2, the second moving lever 6.3 and the second knock-off joint 6.4, and Y-direction passes Motivation structure 7 is made of third fixed seat 7.1, third elastic wire 7.2, third moving lever 7.3 and third knock-off joint 7.4.

The sensing unit is as shown in Figure 1, Figure 3, from Z-direction linear displacement transducer 11, X to 12 and of linear displacement transducer Y-direction linear displacement transducer 13 forms, and three linear displacement transducers are commercial goods, and sensing modality is LVDT inductance types Linear displacement transducer.The CD375-050 of model sieve Marko company of Z-direction linear displacement transducer, X, Y-direction straight-line displacement pass The MHR-010 of sensor model TE companies.

The position-limiting unit as shown in Fig. 1, Fig. 6, Fig. 7, Fig. 8, from Z-direction limit sensing mechanism 14, X to limit sensing mechanism 15 and Y-direction limit sensing mechanism 16 form；It states Z-direction and limits sensing mechanism 14 by collets 14.1,14.2 and of the first position-limiting spring leaf First limit contact 14.3 forms, and the X is to limit sensing mechanism 15 and Y-direction limit sensing mechanism 16 by dead ring 15.1, the Two position-limiting spring leafs 15.2, third position-limiting spring leaf 15.3, contact installation sheet 15.4, second limit contact 15.5, connecting seat 15.6, consolidate Determine cap 15.7 and third limit contact 16.1 forms.

The signal processing unit 18 is as shown in Fig. 1, Figure 13, including displacement signal processor 18.1, voltage-stablizer 18.2, One potentiometer 18.3, the second potentiometer 18.5 and circuit board 18.4, displacement signal processor, the first potentiometer, the second potentiometer It it is three, displacement signal processor 18.1, voltage-stablizer 18.2, the first potentiometer 18.3, the second potentiometer 18.5 are commercially available Commodity, the model specification AD698 of displacement signal processor 18.1, the model specification WSW3-3 of the first potentiometer 18.3, the second electricity Position device 18.5 model specification WSW3-3, voltage-stablizer 18.2 by voltage stabilized range+15V and -15V two model PQ30RV21 Voltage-stablizer composition.

The installation system as shown in Figure 1, including shell 21, head cover 22, bottom cover 19, sealing ring 20, the first support column 23, Second support column 24, third support column 25 and support plate 17, the first support column 23 are four, the second support column 24 and third support The quantity of column 25 is identical as the quantity of the first support column, and shell 21 is cylinder, and 19 centre of bottom cover is provided with single for movement Probe 1 in member by centre bore, the first support column 23, the second support column 24 and third support column 25 are stud.

The installation combination of above-mentioned component and device is as follows：

As shown in Figure 1, the bottom cover 19 is connect with 21 lower thread of shell, the sealing ring 20 is located at bottom cover 19 and shell Between the contact surface of 21 lower ends；Four first support columns 23 are uniformly distributed around 3 periphery of lower response agency, their lower end difference It is connect with lower response agency 3 and bottom cover peripheral thread, lower response agency 3 is removably fixed on bottom cover 19, they Upper end is connect with 9 peripheral thread of upper response agency respectively, is fixed on upper response agency 9 is detachable on the first support column 23； Four second support columns 24 are uniformly distributed around 9 periphery of upper response agency, their lower end respectively with 9 periphery spiral shell of upper response agency Line connects, their upper end connect with 17 peripheral thread of support plate respectively, is fixed on the second support by support plate 17 is detachable On column 24；Four third support columns 25 are uniformly distributed around 17 periphery of support plate, their lower end respectively with 17 periphery of support plate It is threadedly coupled, their upper end is connect with 18.4 peripheral thread of the circuit board respectively, by 18.4 detachable fixation of circuit board On third support column 25.

As shown in Fig. 1, Fig. 3, Fig. 6, the lower maneuvering board 2, lower fixinig plate 4 be located at lower response agency 3 top surface and Bottom surface, and connect with the first " cross " shape spring leaf 3.2 in lower response agency；The upper maneuvering board 8, upper fixinig plate 10 are distinguished It is connect positioned at the bottom surface and top surface of upper response agency 9, and with the second " cross " shape spring leaf 9.2 in upper response agency.

As shown in Figure 2, Figure 3, Figure 4, the center of following maneuvering board 2 is that origin establishes three-dimensional cartesian coordinate system, and the Z-direction passes The installation combination of each component in motivation structure 5：First fixed seat 5.1 is mounted on 2 top surface of lower maneuvering board, center line and three-dimensional The Z axis of rectangular coordinate system overlaps, and the first elastic wire 5.2 is fixed in the first fixed seat, the lower end of the first moving lever 5.3 and the The connection of one elastic wire, upper end are connect with the first knock-off joint lower end, the upper end of the first knock-off joint 5.4 for upper maneuvering board 8 and The kinetoplast connection of Z-direction linear displacement transducer 11, when combination, should make the first elastic wire 5.2, the first moving lever in sensing unit 5.3 and first the center line of knock-off joint 5.4 overlapped with the center line of the first fixed seat 5.1；The X each structures into transmission mechanism 6 The installation combination of part：Second fixed seat 6.1 is in 2 top surface of lower maneuvering board, center line and the first fixed seat 5.1 The parallel and X-axis with rectangular coordinate system of heart line intersects, and the center line of the second fixed seat 6.1 is away from three-dimensional cartesian coordinate system origin Distance is D mm, and the second elastic wire 6.2 is fixed in the second fixed seat, lower end and the second Elastic Steel of the second moving lever 6.3 Silk connection, upper end are connect with 6.4 lower end of the second knock-off joint, the upper end of the second knock-off joint 6.4 for X in sensing unit to straight line The kinetoplast of displacement sensor 12 connects, and when combination should make the second elastic wire 6.2, the second moving lever 6.3 and the second knock-off joint 6.4 Center line overlapped with the center line of the second fixed seat 6.1；The installation combination of each component in the Y-direction transmission mechanism 7：The Three fixed seats 7.1 are mounted on 2 top surface of lower maneuvering board, the centerline parallel of center line and the first fixed seat 5.1 and with right angle seat The Y-axis intersection of mark system, and distance of the center line of third fixed seat 7.1 away from three-dimensional cartesian coordinate system origin is similarly D mm, the Three elastic wires 7.2 are fixed in third fixed seat, the lower end of third moving lever 7.3 connect with third elastic wire, upper end with 7.4 lower end of third knock-off joint connects, and the upper end of third knock-off joint 7.4 is used for and Y-direction linear displacement transducer 13 in sensing unit Kinetoplast connection, when combination should make third elastic wire 7.2, the center line of third moving lever 7.3 and third knock-off joint 7.4 and the The center line of three fixed seats 7.1 overlaps.

As shown in Figure 1, Figure 3, the Z-direction linear displacement transducer 11 is mounted on the support plate 17, and installation site is answered Its center line and the center line of Z-direction transmission mechanism 5 is set to overlap, the kinetoplast of Z-direction linear displacement transducer and in Z-direction transmission mechanism the The upper end of one knock-off joint 5.4 connects；The X is mounted on to linear displacement transducer 12 on upper maneuvering board 8, and installation site should make it Center line is overlapped with X to the center line of transmission mechanism 6, kinetoplasts and X into transmission mechanism second bar of the X to linear displacement transducer 6.4 upper end of connector connects；The Y-direction linear displacement transducer 13 is mounted on upper maneuvering board 8, and installation site should make its center line It is overlapped with the center line of Y-direction transmission mechanism 7, kinetoplast and the third knock-off joint in Y-direction transmission mechanism of Y-direction linear displacement transducer 7.4 upper end connection.

As shown in Figure 1, shown in Figure 5, the upper end of the probe is acted on by magnetic-adsorption and being connect with lower 2 bottom surface of maneuvering board, is connected Position should be such that its center line and the center line of Z-direction transmission mechanism 5 overlaps, and probe lower end passes through the centre bore of bottom cover 19 to stretch out, position Except the shell 21.

The installation combination of each component is as shown in Figure 6 in the Z-direction limit sensing mechanism 14：Collets 14.1 are mounted on The periphery of 9 top surface of upper response agency, the first limit contact 14.3 are mounted on 10 top surface of upper fixinig plate, and the first position-limiting spring leaf 14.2 is Strip reed, one end are mounted on collets, and cantilever end is located at 14.3 top of the first limit contact, and the first position-limiting spring leaf is outstanding Spacing between arm end bottom surface and the first limit contact is the restriction range that probe bulb 1.1 moves upwards；The X is passed to limit The installation combination for feeling each component in mechanism 15 and Y-axis limit sensing mechanism 16 is as shown in Figure 7, Figure 8：Second position-limiting spring leaf 15.2, third position-limiting spring leaf 15.3 and contact installation sheet 15.4 are " L " shape sheet body that two arms is formed, two-arm intersection area It is provided with the suit hole with Z-direction transmission mechanism combination；Connecting seat 15.6 is mounted on 8 bottom surface of upper maneuvering board and is sleeved on Z-direction transmission On first moving lever 5.3 of mechanism, the second position-limiting spring leaf 15.2, contact installation sheet 15.4, third position-limiting spring leaf 15.3 from up to Under be sleeved on successively on the first moving lever 5.3 of Z-direction transmission mechanism；Dead ring 15.1 is two, is sleeved on Z-direction transmission mechanism On first moving lever 5.3, and it is located between the second position-limiting spring leaf 15.2 and contact installation sheet 15.4, contact installation sheet 15.4 Between third position-limiting spring leaf 15.3；Locking cap 15.7 is sleeved on the first moving lever 5.3 of Z-direction transmission mechanism, the upper end with Third position-limiting spring leaf 15.3 contacts, and third position-limiting spring leaf 15.3, contact installation sheet 15.4, second are limited spring by screw fastening Piece 15.2 and dead ring 15.1 are fixed；The one arm end of contact installation sheet 15.4 and X are to the second moving lever 6.3 of transmission mechanism Connection, another arm end are connect with the third moving lever 7.3 of Y-direction transmission mechanism, and the second limit contact 15.5 is mounted on contact On the arm that installation sheet 15.4 is connect with X to the second moving lever 6.3 of transmission mechanism, and it is located at the second position-limiting spring leaf 15.2 and third Between position-limiting spring leaf 15.3, third limits the third movement that contact 16.1 is mounted on contact installation sheet 15.4 with Y-direction transmission mechanism On the arm that bar 7.3 connects, and between the second position-limiting spring leaf 15.2 and third position-limiting spring leaf 15.3, the second position-limiting spring leaf 15.2 Spacing between bottom surface and the second limit contact 15.5, third limit contact 16.1 is that probe bulb is turned round to X-axis or the positive of Y-axis The restriction range turned；Between between 15.3 top surface of third position-limiting spring leaf and the second limit contact 15.5, third limit contact 16.1 Away from the restriction range reversed to the negative sense of X-axis or Y-axis for probe bulb.

As shown in figure 13, institute's displacement signal processor 18.1, voltage-stablizer 18.2, the first potentiometer 18.3 and the second current potential Device 18.5 is mounted on circuit board 18.4；Voltage-stablizer 18.2 will be for that will be supplied to the voltage of three displacement signal processors 18.1 steady It is scheduled in set range；Three the first potentiometers 18.3 are respectively used to adjust the amplification of three displacement signal processors 18.1 Multiplying power, three the second potentiometers 18.5 are respectively used to adjust the voltage bias of three displacement signal processors 18.1；Three displacements Signal processor 18.1 is respectively used to pass to linear displacement transducer 12, Y-direction straight-line displacement to Z-direction linear displacement transducer 11, X Sensor 13, which provides, starts pumping signal, and will come from Z-direction linear displacement transducer 11, X respectively to linear displacement transducer 12, Y It is converted into the transmission of linear voltage difference signal to the displacement electric signal of the mark measured workpiece surface parameter of linear displacement transducer 13 To the processing system of three coordinate measuring machine.

The head cover 22 is mounted on shell upper end, and is connect with shell threaded upper ends.

The appearance and size of contact-type 3 D spotting scaming gauge head described in the present embodiment：Outer diameter φ 35mm, long 80mm is (without spy Needle).

The application method of contact-type 3 D spotting scaming gauge head described in the present embodiment is as follows：In use, the gauge head is installed Distinguish on three coordinate machines, and by the signal output end of three displacement signal processors 18.1 of signal processing unit in the gauge head It is electrically connected with the processing system of three coordinate measuring machine, the first limit contact 14.3, second of position-limiting unit in the gauge head is limited Contact 15.5 and third limit contact 16.1 are electrically connected with the control system of three coordinate measuring machine respectively.The gauge head is surveyed in three coordinates It measures under machine travel, the mark measured workpiece surface that measured workpiece surface is scanned back and forth by probe bulb 1.1, and will be detected The displacement electric signal of parameter is converted into linear voltage difference signal and sends three coordinate measuring machine to.When probe bulb 1.1 is more than to limit Range when (14.2 bottom surface of the first position-limiting spring leaf is contacted with the first limit contact 14.3,15.2 bottom surface of the second position-limiting spring leaf and the Two limit contacts 15.5, third limit contact 16.1 contact or 15.3 top surface of third position-limiting spring leaf with second limit contact 15.5, Third limits contact 16.1 and contacts), three coordinate measuring machine control system is braked, and gauge head is made to stop scanning.

The measuring principle of contact-type 3 D spotting scaming gauge head described in the present embodiment is as follows：As shown in Figures 9 and 10, to quilt Survey workpiece surface scanning engineering in, probe bulb 1.1 will produce along Z-direction displacement and X to or Y-direction twist motion (return Initial position can finally be returned in structure under the action of cross-spring piece by answering a pager's call).When probe bulb 1.1 is generated along the displacement of Z-direction, As can be seen from Figure 12, the geometrical relationship formula of S3=Z can be obtained, in formula, S3 represents the Z-direction displacement of probe bulb generation, and Z represents Z The displacement along 11 axis direction of Z-direction linear displacement transducer generated to transmission mechanism 5；Linear displacement transducer 11 perceives position Shifting amount Z, and convert thereof into electric signal and send a corresponding displacement signal processor 18.1 to.When probe bulb 1.1 generates X To or Y-direction twist motion when, it can be seen from figure 11 that the geometrical relationship formula of S1/L=X/D or S2/L=Y/D, formula can be obtained In, D represents X to the distance between the center line of transmission mechanism 6 or Y-direction transmission mechanism 7 and 2 center line of lower maneuvering board, and L, which is represented, to be visited The distance between needle bulb 1.1 and lower maneuvering board 2, S1 represent the X of the generation of probe bulb 1.1 to displacement, and X represents X to transmission Mechanism 6 generate along X to the displacement of 12 axis direction of linear displacement transducer, S2 represent probe bulb 1.1 generation Y-direction position Shifting amount, Y represent the displacement along 13 axis direction of Y-direction linear displacement transducer of the generation of Y-direction transmission mechanism 7；X is to straight-line displacement Sensor 12 perceives displacement X, Y-direction linear displacement transducer 13 perceives displacement Y, and is converted into electric signal biography respectively Give a corresponding displacement signal processor 18.1.

Claims (10)

1. a kind of contact-type 3 D spotting scaming gauge head, it is characterised in that by moving cell, sensing unit, position-limiting unit, signal Processing unit (18) and for install moving cell, sensing unit, position-limiting unit, signal processing unit installation system composition；

The moving cell includes probe (1), lower maneuvering board (2), lower response agency (3), lower fixinig plate (4), Z-direction transmission mechanism (5), X is to transmission mechanism (6), Y-direction transmission mechanism (7), upper maneuvering board (8), upper response agency (9) and upper fixinig plate (10), under Response agency (3) and upper response agency (9) contain elastic component；

The sensing unit is passed from Z-direction linear displacement transducer (11), X to linear displacement transducer (12) and Y-direction straight-line displacement Sensor (13) forms；

The position-limiting unit limits sensing mechanism from Z-direction limit sensing mechanism (14), X to limit sensing mechanism (15) and Y-direction (16) it forms；

The signal processing unit (18) includes displacement signal processor (18.1) and circuit board (18.4)；

The installation system include shell (21), head cover (22), bottom cover (19), the first support column (23), the second support column (24), Third support column (25) and support plate (17), the first support column (23) are at least three, and the second support column (24) and third support The quantity of column (25) is identical as the quantity of the first support column, and bottom cover (19) centre is provided with for the probe in moving cell (1) by centre bore；

The bottom cover (19) is detachably connected with shell (21) lower end；Each first support column (23) lower end respectively with lower links-and-links machine Structure (3) and the combination of bottom cover periphery, lower response agency (3) are removably fixed on bottom cover (19), each first support column (23) upper end is connect with upper response agency (9) periphery respectively, is fixed on the first support column by upper response agency (9) is detachable (23) on；Each second support column (24) lower end is connect with upper response agency (9) periphery respectively, on each second support column (24) End is connect with support plate (17) periphery respectively, is fixed on support plate (17) is detachable on the second support column (24)；Each Three support columns (25) lower end is connect with support plate (17) periphery respectively, each third support column (25) upper end respectively with the circuit Plate (18.4) periphery connects, and is fixed on circuit board (18.4) is detachable on third support column (25)；

The lower maneuvering board (2), lower fixinig plate (4) are located at the top and bottom of lower response agency (3), and with lower links-and-links machine Elastic component connection contained by structure (3)；The upper maneuvering board (8), upper fixinig plate (10) are located at the bottom surface of response agency (9) And top surface, and connect with the elastic component contained by upper response agency (9)；The center of following maneuvering board (2) is that origin establishes three-dimensional straight Angular coordinate system, the Z-direction transmission mechanism (5) are mounted on the top surface of lower maneuvering board (2), center line and three-dimensional cartesian coordinate system Z axis overlaps, and the upper end is connect with upper maneuvering board (8)；The X is mounted on lower maneuvering board (2) top surface to transmission mechanism (6), wherein Heart line intersects with the centerline parallel of Z-direction transmission mechanism (5) and with the X-axis of rectangular coordinate system；Y-direction transmission mechanism (7) peace Mounted in lower maneuvering board (2) top surface, the centerline parallel of center line and Z-direction transmission mechanism (5) and with the Y-axis phase of rectangular coordinate system Hand over, and distance of the center line away from rectangular coordinate system origin and center line from X to transmission mechanism (6) away from rectangular coordinate system origin Apart from equal；

The Z-direction linear displacement transducer (11) is mounted on the support plate (17), and installation site should make its center line and Z-direction The center line of transmission mechanism (5) overlaps, and the kinetoplast of Z-direction linear displacement transducer is connect with Z-direction transmission mechanism (5) upper end；The X It is mounted on upper maneuvering board (8) to linear displacement transducer (12), installation site should make its center line and X to transmission mechanism (6) Center line overlap, X connect with X to transmission mechanism (6) upper end to the kinetoplast of linear displacement transducer；The Y-direction straight-line displacement Sensor (13) is mounted on upper maneuvering board (8), and installation site should make the center line weight of its center line and Y-direction transmission mechanism (7) It closes, the kinetoplast of Y-direction linear displacement transducer is connect with the upper end of Y-direction transmission mechanism (7)；

The Z-direction limit sensing mechanism (14) is mounted on upper response agency (9) and upper fixinig plate (10), and the X is passed to limit Feel mechanism (15) and be mounted on upper maneuvering board (8) and X on transmission mechanism (6), the Y-axis limit sensing mechanism (16) is in upper movement On plate (8) and Y-direction transmission mechanism (7)；

Probe (1) lower end is bulb (1.1), and the upper end of probe is connected by magnetic-adsorption effect with lower maneuvering board (2) bottom surface It connects, link position should be such that its center line and the center line of Z-direction transmission mechanism (5) overlaps, and probe lower end passes through in bottom cover (19) Heart hole is stretched out, and is located at except the shell (21)；

Institute's displacement signal processor (18.1) is mounted on circuit board (18.4)；Displacement signal processor (18.1) is used for Z It is provided to linear displacement transducer (11), X to linear displacement transducer (12), Y-direction linear displacement transducer (13) and starts excitation Signal, and Z-direction linear displacement transducer (11), X will be come to linear displacement transducer (12), Y-direction linear displacement transducer (13) the displacement electric signal of mark measured workpiece surface parameter is converted into linear voltage difference signal and sends three coordinate measuring machine to Or the processing system of numerical control machining center；

The head cover (22) is mounted on shell upper end, and is detachably connected with shell upper end.

2. contact-type 3 D spotting scaming gauge head according to claim 1, it is characterised in that the lower response agency (3) contained Elastic component is the first " cross " shape spring leaf (3.2), and lower response agency is by the first " cross " shape spring leaf (3.2) and two first Reed fixed cover (3.1) is composed, and first " cross " shape spring leaf is mounted between two the first reed fixed covers, center Position is provided with through-hole；The elastic component that upper response agency (9) contains be the second " cross " shape spring leaf (9.2), upper response agency by Second " cross " shape spring leaf (9.2) and two the second reed fixed covers (9.1) are composed, second " cross " shape spring leaf peace Between two the second reed fixed covers, the center portion thereof position is provided with through-hole.

3. contact-type 3 D spotting scaming gauge head according to claim 1 or claim 2, it is characterised in that the Z-direction transmission mechanism (5) It is made of the first fixed seat (5.1), the first elastic wire (5.2), the first moving lever (5.3) and the first knock-off joint (5.4), first Fixed seat (5.1) is mounted on lower maneuvering board (2) top surface, and center line is overlapped with the Z axis of three-dimensional cartesian coordinate system, the first Elastic Steel Silk (5.2) is fixed in the first fixed seat, and the lower end of the first moving lever (5.3) connect with the first elastic wire, upper end and first Knock-off joint lower end connects, and the upper end of the first knock-off joint (5.4) is used for and Z-direction straight-line displacement in upper maneuvering board (8) and sensing unit The kinetoplast of sensor (11) connects, and when combination should make the first elastic wire (5.2), the first moving lever (5.3) and the first knock-off joint (5.4) center line is overlapped with the center line of the first fixed seat (5.1)；

The X is to transmission mechanism (6) by the second fixed seat (6.1), the second elastic wire (6.2), the second moving lever (6.3) and Two knock-off joints (6.4) form, and the second fixed seat is mounted on lower maneuvering board (2) top surface, center line and the first fixed seat (5.1) Centerline parallel simultaneously intersects with the X-axis of rectangular coordinate system, and the second elastic wire (6.2) is fixed in the second fixed seat, the second fortune The lower end of lever (6.3) is connect with the second elastic wire, upper end is connect with the second knock-off joint lower end, the second knock-off joint (6.4) For being connect to the kinetoplast of linear displacement transducer (12) with X in sensing unit, when combination, should make the second elastic wire for upper end (6.2), the center line of the second moving lever (6.3) and the second knock-off joint (6.4) is overlapped with the center line of the second fixed seat (6.1)；

The Y-direction transmission mechanism (7) is by third fixed seat (7.1), third elastic wire (7.2), third moving lever (7.3) and Three knock-off joints (7.4) form, and third fixed seat (7.1) is mounted on lower maneuvering board (2) top surface, center line and the first fixed seat (5.1) centerline parallel simultaneously intersects with the Y-axis of rectangular coordinate system, and the center line of third fixed seat (7.1) is away from rectangular co-ordinate It is the center line of distance and the second fixed seat (6.1) of origin away from equal, third elastic wire at a distance from rectangular coordinate system origin (7.2) it is fixed in third fixed seat, the lower end of third moving lever (7.3) connect with third elastic wire, upper end and third bar Connector lower end connects, and the upper end of third knock-off joint (7.4) is for the kinetoplast with Y-direction linear displacement transducer (13) in sensing unit Connection, when combination, should make third elastic wire (7.2), the center line of third moving lever (7.3) and third knock-off joint (7.4) and the The center line of three fixed seats (7.1) overlaps.

4. contact-type 3 D spotting scaming gauge head according to claim 1 or claim 2, it is characterised in that the Z-direction limits sensing machine Structure (14) is made of collets (14.1), the first position-limiting spring leaf (14.2) and the first limit contact (14.3), collets (14.1) Periphery mounted on upper response agency (9) top surface, the first limit contact (14.3) are mounted on upper fixinig plate (10) top surface, the first limit Position reed (14.2) is strip reed, and one end is mounted on collets, and cantilever end is located in the first limit contact (14.3) Side；

The X is to limit sensing mechanism (15) and Y-direction limit sensing mechanism (16) by dead ring (15.1), the second position-limiting spring leaf (15.2), third position-limiting spring leaf (15.3), contact installation sheet (15.4), second limit contact (15.5), connecting seat (15.6), consolidate Determine cap (15.7) and third limit contact (16.1) composition, the second position-limiting spring leaf (15.2), third position-limiting spring leaf (15.3) and touch Point installation sheet (15.4) is " L " shape sheet body that two arms is formed, and two-arm intersection area is provided with and Z-direction transmission mechanism combination Suit hole；Connecting seat (15.6) is mounted on upper maneuvering board (8) bottom surface and is sleeved on Z-direction transmission mechanism (5), the second limit spring Piece (15.2), contact installation sheet (15.4), third position-limiting spring leaf (15.3) are sleeved on Z-direction transmission mechanism successively from top to bottom； Dead ring (15.1) is two, is sleeved on Z-direction transmission mechanism (5), and be located at the second position-limiting spring leaf (15.2) and contact Between installation sheet (15.4), between contact installation sheet (15.4) and third position-limiting spring leaf (15.3)；Locking cap (15.7) is sleeved on Z To on transmission mechanism (5), the upper end is contacted with third position-limiting spring leaf (15.3), is fastened third position-limiting spring leaf by screw (15.3), contact installation sheet (15.4), the second position-limiting spring leaf (15.2) and dead ring (15.1) are fixed；Contact installation sheet (15.4) One arm end connect to transmission mechanism (6) with X, another arm end is connect with Y-direction transmission mechanism (7), second limit touch Point (15.5) is mounted on the arm that contact installation sheet (15.4) is connect with X to transmission mechanism (6), and is located at the second position-limiting spring leaf (15.2) between third position-limiting spring leaf (15.3), third limits contact (16.1) and is mounted on contact installation sheet (15.4) and Y-direction On the arm of transmission mechanism (7) connection, and between the second position-limiting spring leaf (15.2) and third position-limiting spring leaf (15.3)；

Described in when use first limit contact (14.3), second limit contact (15.5) and third limit contact (16.1) respectively with The control system of three coordinate measuring machine or numerical control machining center is electrically connected.

5. contact-type 3 D spotting scaming gauge head according to claim 3, it is characterised in that the Z-direction limits sensing mechanism (14) it is made of collets (14.1), the first position-limiting spring leaf (14.2) and the first limit contact (14.3), collets (14.1) peace Periphery mounted in upper response agency (9) top surface, the first limit contact (14.3) are mounted on upper fixinig plate (10) top surface, the first limit Reed (14.2) is strip reed, and one end is mounted on collets, and cantilever end is located above the first limit contact (14.3)；

The X is to limit sensing mechanism (15) and Y-direction limit sensing mechanism (16) by dead ring (15.1), the second position-limiting spring leaf (15.2), third position-limiting spring leaf (15.3), contact installation sheet (15.4) second limit contact (15.5), connecting seat (15.6), consolidate Determine cap (15.7) and third limit contact (16.1) composition, the second position-limiting spring leaf (15.2), third position-limiting spring leaf (15.3) and tactile Point installation sheet (15.4) is " L " shape sheet body that two arms is formed, and two-arm intersection area is provided with and Z-direction transmission mechanism combination Suit hole；Connecting seat (15.6) is mounted on upper maneuvering board (8) bottom surface and is sleeved on the first moving lever of Z-direction transmission mechanism (5.3) on, the second position-limiting spring leaf (15.2), contact installation sheet (15.4), third position-limiting spring leaf (15.3) cover successively from top to bottom On the first moving lever (5.3) of Z-direction transmission mechanism；Dead ring (15.1) is two, is sleeved on the first of Z-direction transmission mechanism On moving lever (5.3), and it is located between the second position-limiting spring leaf (15.2) and contact installation sheet (15.4), contact installation sheet (15.4) between third position-limiting spring leaf (15.3)；Locking cap (15.7) is sleeved on the first moving lever (5.3) of Z-direction transmission mechanism On, the upper end is contacted with third position-limiting spring leaf (15.3), is fastened third position-limiting spring leaf (15.3), contact installation sheet by screw (15.4), the second position-limiting spring leaf (15.2) and dead ring (15.1) are fixed；The one arm end of contact installation sheet (15.4) and X to The second moving lever (6.3) of transmission mechanism connects, and another arm end is connect with the third moving lever (7.3) of Y-direction transmission mechanism, Second limit contact (15.5) is mounted on what contact installation sheet (15.4) was connect with X to the second moving lever (6.3) of transmission mechanism On arm, and between the second position-limiting spring leaf (15.2) and third position-limiting spring leaf (15.3), third limits contact (16.1) installation On the arm that contact installation sheet (15.4) is connect with the third moving lever (7.3) of Y-direction transmission mechanism, and it is located at the second position-limiting spring leaf (15.2) between third position-limiting spring leaf (15.3)；

Described in when use first limit contact (14.3), second limit contact (15.5) and third limit contact (16.1) respectively with The control system of three coordinate measuring machine or numerical control machining center is electrically connected.

6. contact-type 3 D spotting scaming gauge head according to claim 1 or claim 2, it is characterised in that the signal processing unit (18) further include voltage-stablizer (18.2), the first potentiometer (18.3) and the second potentiometer (18.5), and institute's displacement signal processing Device (18.1), the first potentiometer, the second potentiometer are three；

Voltage-stablizer (18.2), the first potentiometer (18.3) and the second potentiometer (18.5) are mounted on circuit board (18.4)；Voltage stabilizing Device (18.2) is used to be supplied to the voltage stabilization of three displacement signal processors (18.1) in set range；Three One potentiometer (18.3) is respectively used to adjust the enlargement ratio of three displacement signal processors (18.1), three the second potentiometers (18.5) it is respectively used to adjust the voltage bias of three displacement signal processors (18.1)；Three displacement signal processors (18.1) It is respectively used to carry to linear displacement transducer (12), Y-direction linear displacement transducer (13) to Z-direction linear displacement transducer (11), X For starting pumping signal, and it is straight to linear displacement transducer (12), Y-direction to come from Z-direction linear displacement transducer (11), X respectively The displacement electric signal of the mark measured workpiece surface parameter of linear movement pick-up (13) is converted into linear voltage difference signal and sends to The processing system of three coordinate measuring machine or numerical control machining center.

7. contact-type 3 D spotting scaming gauge head according to claim 1 or claim 2, it is characterised in that the installation system further includes Sealing ring (20), the sealing ring (20) are located between bottom cover (19) and the contact surface of shell (21) lower end.

8. contact-type 3 D spotting scaming gauge head according to claim 3, it is characterised in that the installation system further includes close Seal (20), the sealing ring (20) are located between bottom cover (19) and the contact surface of shell (21) lower end.

9. contact-type 3 D spotting scaming gauge head according to claim 4, it is characterised in that the installation system further includes close Seal (20), the sealing ring (20) are located between bottom cover (19) and the contact surface of shell (21) lower end.

10. contact-type 3 D spotting scaming gauge head according to claim 5, it is characterised in that the installation system further includes close Seal (20), the sealing ring (20) are located between bottom cover (19) and the contact surface of shell (21) lower end.