CN106556316B - A kind of dial bore gage measurement bay - Google Patents
A kind of dial bore gage measurement bay Download PDFInfo
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- CN106556316B CN106556316B CN201610897261.7A CN201610897261A CN106556316B CN 106556316 B CN106556316 B CN 106556316B CN 201610897261 A CN201610897261 A CN 201610897261A CN 106556316 B CN106556316 B CN 106556316B
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- gauge head
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- measurement matrix
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/0002—Arrangements for supporting, fixing or guiding the measuring instrument or the object to be measured
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/08—Measuring arrangements characterised by the use of mechanical techniques for measuring diameters
- G01B5/12—Measuring arrangements characterised by the use of mechanical techniques for measuring diameters internal diameters
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses a kind of dial bore gage measurement bays, including measuring matrix, fixed gauge head, movable gauge head and the table bar extended in left-right direction, the upper end of measurement matrix is arranged in fixed gauge head, the lower end of measurement matrix is arranged in movable gauge head, and the axis of fixed gauge head is overlapped with the axis of movable gauge head and vertically extends, measurement matrix is rotatably arranged on table bar, and the pivot center and the axis of table bar of measurement matrix and the axis of fixed gauge head are vertical, swing driving mechanism of the driving measurement matrix around pivot center relative to table bar reciprocally swinging is provided between the measurement matrix and the table bar.Pivot center of the above-mentioned swing driving mechanism by driving measurement matrix around measurement matrix does reciprocal swing with respect to table bar, just solves the problems, such as to cause swing angle since measurement matrix is installed on table bar in the prior art not enough and can not detect deep hole.
Description
Technical field
The present invention relates to a kind of dial bore gage measurement bays.
Background technique
Instrument for measuring internal diameter of cycle trough, including main body (i.e. measurement base are disclosed in Chinese patent literature CN2182985Y
Body), bracket, straight tube, mandril, movable gauge head, test probe replaceable (i.e. fixed gauge head) and bascule, movable gauge head and test probe replaceable
Be co-axially located in main body, test probe replaceable is removable to be assemblied in main body and is locked by locking nut, movable gauge head and main body it
Between be slidably matched.Spring is equipped between the top and test probe replaceable of cavity in movable gauge head, spring center has guide rod.In straight tube
Equipped with mandril, one end of mandril is contacted with the gauge outfit contact of dial gauge, and the other end of mandril is contacted with bascule, bascule
The other end contacted with movable gauge head, bascule forms the gauge outfit for converting the displacement variable of movable gauge head to dial gauge
The displacement transmission mechanism of the displacement variable of contact.After main body protrudes into measured bore, movable gauge head under the action of the spring lead by edge
Bar is mobile and bascule is pushed to rotate, and bascule pushes mandril mobile, and mandril pushes the gauge outfit contact of dial gauge mobile, and hundred
The rotation of table indicator is divided just to complete measurement purpose.Dial bore gage when in use, the minimum of axial plane is found by swinging
Having a size of diameter, since body normal is installed on straight tube, in this way when needing to detect deep hole, due to the swing of main body
Angle is not enough unable to measure, when needing to detect stepped hole, since bracket can not protrude into macropore from aperture, also with regard to nothing
Method detects macropore.This requires provide a kind of dial bore gage measurement bay that measurement matrix can be swung with respect to table bar.
Summary of the invention
The purpose of the present invention is to provide a kind of dial bore gage measurement bays that measurement matrix can be swung with respect to table bar.
To achieve the above object, the technical solution of dial bore gage measurement bay of the present invention is:
A kind of dial bore gage measurement bay extends including measurement matrix, fixed gauge head, movable gauge head and in left-right direction
The upper end of measurement matrix is arranged in table bar, fixed gauge head, and the lower end of measurement matrix, and the axis of fixed gauge head is arranged in movable gauge head
Line is overlapped with the axis of movable gauge head and vertically extends, and measurement matrix is rotatably arranged on table bar, and measures matrix
Pivot center and the axis of table bar and fixed gauge head axis it is vertical, set between the measurement matrix and the table bar
It is equipped with swing driving mechanism of the driving measurement matrix around pivot center relative to table bar reciprocally swinging.
Swing driving mechanism includes for driving measurement matrix to swing around the pivot center of measurement matrix to a direction
Pull driving mechanism and the elastic reset for driving measurement matrix to swing in the other direction around the pivot center of measurement matrix
Mechanism.
The spanner that driving mechanism includes bracing wire and is hinged on table bar is pulled, bracing wire one end is installed on measurement matrix, is another
One end is installed on spanner.
Flexible restoring organ is removable the first tension spring being mounted on table bar in one end, and the other end of the first tension spring passes through screw rod
The removable lower end for being mounted on measurement matrix.
The lower end of measurement matrix is additionally provided with centering machine, centering machine include two can relative measurement matrix synchronize elasticity
Flexible support contact, two support contacts are symmetrically set relative to the plane being made of the axis of fixed gauge head and the axis of table bar
Set, and the midpoint of the line of two support contacts is overlapped with the axis of fixed gauge head, in measurement two support contacts be tested
The interior wall pressure of inner hole touches.
Centering machine include along the vertical direction guiding movement be assemblied in measurement matrix lower end on guide cylinder, guide cylinder and survey
It measures to press along the vertical direction between matrix and is equipped with pressure spring, two support contacts are fixed on guide cylinder.
The lower end for measuring matrix is equipped with guiding kidney slot, on guide cylinder it is removable be equipped with for the guiding kidney slot
It is oriented to the backing pin being slidably matched, the pressure spring setting is additionally provided with use on the guide cylinder between backing pin and measurement matrix
In the stretching ear for installing two support contacts.
A kind of displacement transmission mechanism of dial bore gage measurement bay includes the mandril and movable gauge head set on the table bar
Between convex gear, the pivot center of convex gear is overlapped with the pivot center of measurement matrix and intersects with the axis of mandril, described
The side towards convex gear of movable gauge head be equipped with rack-driving toothing, the convex gear is equipped with and is used for and rack gear
It is driven the meshing teeth of toothing engaged transmission and for the cam part with the mandril cooperation.
Measuring matrix includes upper supporting block, lower supporting block, left plate and right side plate, and the upper and lower supporting block is folded in
Between left and right side plate, and it is located at the upper/lower terminal of measurement matrix.
The beneficial effects of the present invention are: being rotatably arranged on table bar by the way that matrix will be measured, and in measurement matrix and table bar
Between swing driving mechanism is set, when needing the geometric tolerance to stepped hole to detect, swing driving mechanism driving measurement
Matrix swings inclination with respect to table bar around center of rotation, to easily enter deep hole out of aperture.When needing to measure deep hole
When geometric tolerance, measurement matrix is protruded into measured bore, then swing driving mechanism driving measurement matrix turns around measurement matrix
Shaft line does reciprocal swing with respect to table bar, and the minimum dimension of the axial plane of measured bore is found by swinging as tested
Diameter of bore, this addresses the problem cause swing angle not enough can not since measurement matrix is installed on table bar in the prior art
The problem of measuring deep hole.
Further, drawing driving mechanism of the invention uses the first tension spring using bracing wire and spanner, flexible restoring organ,
So that user need to only pull or unclamp spanner, measurement matrix just overcomes the first tension spring to act in bracing wire active force for such setting
Power does clockwise oscillation, and after unclamping bracing wire, measurement matrix again can counter-clockwise swing, operation letter under the action of the first tension spring
It is single.
In addition, centering machine of the invention determines a round principle using 3 points, setting two relative to measurement matrix
The support contact of synchronous elastic telescopic, and two support contacts are symmetricly set on to the axis of fixed gauge head and the axis group of table bar
At plane two sides, and the midpoint of the line of two support contacts is overlapped with the axis of fixed gauge head, in this way in two supports
Under the collective effect of contact and fixed gauge head, it ensure that movable gauge head moves on this diameter of a circle always, make measurement data
It is relatively reliable.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of an embodiment of the present invention；
Fig. 2 is the enlarged drawing in Fig. 1 at A；
Fig. 3 is the cross-sectional view of B-B in Fig. 1；
Fig. 4 is the structural schematic diagram of lower supporting block in Fig. 1；
Fig. 5 is the top view of Fig. 4；
Fig. 6 is the structural schematic diagram of transition attachment base in Fig. 1；
Fig. 7 is the C-C cross-sectional view of Fig. 6；
Fig. 8 is the D-D cross-sectional view of Fig. 6；
Fig. 9 is the structural schematic diagram of guide cylinder in Fig. 1；
Figure 10 is the E-E cross-sectional view of Fig. 9；
Figure 11 is schematic diagram when movable gauge head rotates clockwise in Fig. 1；
Figure 12 is schematic diagram when movable gauge head rotates counterclockwise in Fig. 1.
Each appended drawing reference title in figure are as follows: 1 fixed gauge head, 2 shells, 3 dial gauges, 4 locking nuts, 5 pin shafts, 6 handles, 7
Transition attachment base, 8 mandrils, 9 convex gears, 10 screw rods, 11 bracing wires, 12 dial indicator holders, 13 fixed pulleys, 14 spanners, 15 second tension springs,
16 guide rollers, 17 lower supporting blocks, 18 positioning support pins, 19 guide cylinders, 20 pressure springs, 21 backing pins, supporting block on 22,23 left sides
Plate, 24 right side plates, 25 movable gauge heads, 26 first tension springs.
Specific embodiment
As Figure 1-10 shows, a kind of dial bore gage measurement bay, including measurement matrix, fixed gauge head 1,25 and of movable gauge head
Table bar.The upper end of measurement matrix is arranged in fixed gauge head 1, and the lower end of measurement matrix, and fixed gauge head 1 is arranged in movable gauge head 25
Axis be overlapped with the axis of movable gauge head 25.The shell 2 of above-mentioned table bar is the tubular structure that left and right extends, and shell 2 is built-in
There is mandril, the axis of mandril is overlapped with the axis of shell 2, and the right end of table bar is equipped with the dial indicator holder 12 for installing dial gauge 3.
Measurement matrix is rotatably arranged on the left end of table bar, and measures the axis of the pivot center of matrix and the axis of table bar and fixed gauge head 1
Line is vertical.
In the present embodiment, measurement matrix is mainly by upper supporting block 22, lower supporting block 17, left plate 23 and 24 groups of right side plate
At upper supporting block 22 and lower supporting block 17 are folded between left and right side plate, and upper supporting block 22 is located at measurement matrix upper end, lower branch
Bracer 17 is located at the lower end of measurement matrix.In the fixed removable upper supporting block 22 for being assemblied in measurement matrix of gauge head 1 and pass through locking
Nut 4 is locked, and the top of fixed gauge head 1 is provided with top spherical surface, and the both ends of movable gauge head 25 are respectively guide end and measurement end,
The guide end of movable gauge head 25 is slidably matched with the guide frame guiding being arranged on measurement matrix, the measurement end of movable gauge head 25
It is provided with measurement spherical surface, the measurement spherical surface of movable gauge head 25 and the top spherical surface for fixing gauge head 1 complete the measurement in hole jointly.It is above-mentioned
Measurement matrix be rotatably arranged on transition attachment base 7 by pin shaft 5, transition attachment base 7 is removable to be mounted on above-mentioned shell 2
Left end, and the axis of pin shaft 5 and the axis of the axis of shell 2 and fixed gauge head 1 are vertical.Above-mentioned mandril sequentially passes through shell
2, then handle 6 are protruded into dial indicator holder 12, be slidably arranged in shell 2 by the guide section guiding being arranged on mandril, and
The right end of mandril for contact with the gauge outfit contact of dial gauge 3, left end protrude into measurement matrix in setting measure base it is intracorporal
It is displaced transmission mechanism contact.Driving measurement matrix is additionally provided between measurement matrix and table bar around pivot center relative to table bar
The swing driving mechanism of reciprocally swinging.
In other embodiments, handle 6 and dial indicator holder 12 can be cancelled, dial gauge 3 is directly installed in the right side of shell 2
End.When the table bar of different length will be replaced by measuring different long holes, in order to which more easily measurement matrix is dismantled simultaneously from table bar
It is mounted on other table bars, transition attachment base 7 is set between table bar and measurement matrix, can also be cancelled in other embodiments
Transition attachment base 7 opens up notch in the left end of table bar, after measurement matrix is put into the notch, wears in table bar and measurement matrix
Enter the band cap screw that one end is polished rod, the other end is threaded rod, then the screw on nut on threaded rod, makes to measure matrix around band cap
The smooth bar part of screw does the rotation relative to table bar.
Above-mentioned guide frame is four guide rollers being arranged between the left plate 23 and right side plate 24 of measurement matrix
16, four guide rollers 16 can flexible rotating.Four guide rollers 16 are distributed in the left and right ends of movable gauge head 25 two-by-two, with work
The guide end guiding of dynamic gauge head 25 is slidably matched, and the measurement end of movable gauge head 25 passes through the sliding inner hole of lower supporting block 17, in work
The sliding block plane for preventing movable gauge head from slipping out of measurement matrix is provided between the guide end and measurement end of dynamic gauge head.?
The second tension spring 15 is additionally provided between measurement matrix and movable gauge head, one end of the second tension spring 15 is arranged on movable gauge head, is another
End is arranged in above-mentioned lower supporting block 17, and the second tension spring 15 makes movable gauge head remain the trend moved down.Work as activity
When the measurement end of gauge head 25 does not stress, the sliding block plane of movable gauge head 25 under the action of the second tension spring 15 always with lower branch
The end face fitting of the sliding inner hole of bracer 17.When the squeezing action of inner wall of the measurement end by measured bore of movable gauge head 25
When, movable gauge head is under the action of guide roller 16 of the second tension spring 15 and two sides along the axis direction of movable gauge head in measurement base
What the upper and lower supporting block and left and right side plate of body surrounded interior intracavitary does upper and lower stretching motion, and above-mentioned sliding block plane quilt
The end face block of the sliding inner hole of lower supporting block 17.In other embodiments, above-mentioned guide frame, which can also be, is provided with survey
Measure the left plate 23 of matrix and/or the guide groove being slidably matched with the guide end guiding of movable gauge head 25 on right side plate 24.
Above-mentioned swing driving mechanism includes for driving the pivot center for measuring matrix around measurement matrix to a direction
The drawing driving mechanism of swing and for driving measurement matrix around the bullet that swings in the other direction of pivot center of measurement matrix
Property resetting-mechanism.The spanner 14 that driving mechanism includes bracing wire 11 and is hinged on table bar is pulled, 11 left end of bracing wire is installed in measurement
In the upper supporting block 22 of matrix, right end is installed on spanner 14.The fixed pulley moved towards for changing bracing wire 11 is equipped on table bar
13, the right end of bracing wire 11 is installed on spanner 14 after passing through fixed pulley 13, is also avoided one end directly by bracing wire 11 in this way and is set
It sets and is easy to be caused measurement data not by by the inner wall interference of sounding hole when measuring matrix upper end, the other end being arranged on table bar
Accurate problem, and the fixed pulley 13 can also make bracing wire 11 keep tensioned state.In other embodiments, fixed pulley can also
Bracing wire to be limited in close to the position of table bar using threading hole nose substitution, the fixed pulley can also be cancelled certainly.Above-mentioned elasticity
Resetting-mechanism be both ends respectively it is removable be mounted on measurement matrix lower supporting block 17 on and table bar 2 on the first tension spring 26, first
Tension spring is connected on measurement matrix by screw rod 10, adjusts the pulling force of tension spring by screwing screw rod 10.In the present embodiment, on
The drawing driving mechanism and flexible restoring organ stated are separately positioned on the upper and lower two sides of the center of rotation of measurement matrix.Other
In embodiment, the upper and lower position for pulling driving mechanism and flexible restoring organ can also be exchanged setting.Certainly, above-mentioned to lead
It draws driving mechanism that can pass through connecting rod again using the pull rod of rigidity to be connected on measurement matrix；Above-mentioned flexible restoring organ may be used also
Using in a manner of pressure spring or torsional spring mode.
Above-mentioned displacement transmission mechanism includes convex gear 9 and rack-driving toothing, and convex gear 9 is rotatably arranged on pin shaft 5
On, the setting of pin shaft 5 is between mandril and movable gauge head 25, and the center of pin shaft 5 is overlapped with the axis of mandril.Rack-driving tooth knot
Structure be arranged in movable gauge head 25 towards on the side of convex gear 9, and the extending direction of rack-driving toothing and movable gauge head
Axis it is parallel, convex gear 9 includes the meshing teeth for transmission to be engaged with rack and the cam part for cooperating with mandril.
In addition, in order to guarantee that, when measuring matrix swing, the line of fixed gauge head 1 and movable gauge head 25 is in tested always
Inner hole diametrically, to ensure the accuracy measured, is also provided with centering machine in the lower end of measurement matrix.Centering machine includes
Two can the synchronous elastic telescopic of relative measurement matrix support contact, two support contacts are relative to the axis by fixed gauge head 1
The plane formed with the axis of table bar is symmetrical arranged, and the axis weight at the midpoint of the line of two support contacts and fixed gauge head 1
It closes.
In the present embodiment, above-mentioned centering machine includes guide cylinder 19, pressure spring 20 and two positioning support pins 18, guiding
Cylinder 19 and the lower end guiding of measurement matrix are slidably matched, and guide cylinder 19 is equipped with the stretching for installing two positioning support pins 18
Ear, two positioning support pins 18 are symmetrical arranged relative to the plane being made of the axis of fixed gauge head 1 and the axis of table bar 2, and
The midpoint of the line of two positioning support pins 18 is overlapped with the axis of fixed gauge head 1；It is equipped between guide cylinder 19 and measurement matrix
Pressure spring, pressure spring and measurement matrix and guide cylinder 19 press cooperation, and the direction of motion of the telescopic direction of pressure spring and movable gauge head
Unanimously, when measure matrix detection measured bore when, two positioning support pins 18 pressure spring effect under move synchronously and always with quilt
Survey the interior wall pressure touching of inner hole.
The lower end of lower supporting block 17 is equipped with guiding kidney slot, and guide cylinder 19 is sleeved on the lower end of lower supporting block 17, guide cylinder
Removable on 19 to be equipped with for being oriented to the backing pin 21 being slidably matched with above-mentioned guiding kidney slot, above-mentioned pressure spring is arranged in backing pin
Between 21 and lower supporting block 17.One end of pressure spring 20 is contacted with lower supporting block 17, the other end is contacted with backing pin 21, and pressure spring 20 is under
Supporting block 17 and backing pin 21 press cooperation, and the direction of motion of guide cylinder is consistent with the movable direction of motion of gauge head 25.Two fixed
Location sphere is provided on the extension end of position supporting pin 18, two location spheres are done and movable gauge head 25 under the action of pressure spring 20
The direction of motion it is consistent slide up and down, certainly, positioning support pin can also using be installed in stretch out ear on hemisphere substitution.
It is additionally provided on above-mentioned guide cylinder 19 and hides kidney slot for hide screw rod 10.It in other embodiments, can also be under
The lower end of supporting block opens up blind hole, guide cylinder is mounted in the blind hole of lower supporting block, and guiding is arranged on the barrel of guide cylinder
Kidney slot, guide cylinder is slidably matched by guiding kidney slot and the removable pin shaft guiding being mounted in lower supporting block, in guide cylinder
Top and lower supporting block blind hole bottom end between spring is set, the bottom of the measurement end of movable gauge head from the bottom end of lower supporting block
Across the slide opening on the top of guide cylinder after being pierced by hole.
The working principle of swing driving mechanism of the invention: one, when pulling spanner 14 downwards, spanner pulls up bracing wire
11, bracing wire 11 pulls measurement matrix to start to rotate clockwise around pin shaft 5, simultaneously as the first tension spring 26 pulls measurement matrix
Lower supporting block 17 hinders its reversal interlocking relay for rotating clockwise to apply to measurement matrix, and measuring matrix so just can only be around
Pin shaft 5 planar rotates clockwise specified angle；When unclamping spanner 14, the first tension spring 26 pulls measurement matrix around pin shaft
5 start to rotate counterclockwise, and under the opposition that bracing wire applies measurement matrix, measurement matrix can only be around pin shaft 5 in plane
Inside rotate counterclockwise specified angle.In this way by pulling spanner 14 downward or upward, it is achieved that measurement matrix is done around pin shaft 5
Swing clockwise or counterclockwise.Two, the pivot center weight of the pivot center of matrix and the convex gear of displacement transmission mechanism is measured
It closes, and the pivot center of convex gear is intersected with the axis of mandril, in this way when the measurement end of movable gauge head 25 does not stress, activity
The sliding stopping surface of gauge head 25 under the action of the second tension spring 15 always with measurement matrix lower supporting block sliding inner hole end
Face paste is closed.As depicted in figs. 11-12, since the top of mandril 8 is pressed on the cam part of convex gear 9, and the axis and double wedge of mandril 8
The center of rotation of wheel 9 is overlapped, at this point, measuring matrix drive activity gauge head 25 together around pin if pulling spanner 14 downward or upward
Axis 5 rotates, since movable gauge head 25 only does the rotation around pin shaft 5 and the engagement rolling in the meshing teeth of convex gear 9, so convex
Gear 9 is simultaneously not affected by tangential active force, and convex gear 9 remains stationary, and such convex gear 9 would not also push mandril 8 mobile, top
Bar 8 does not push the gauge outfit contact of dial gauge mobile yet, and the pointer of dial gauge is not also swung.When movable gauge head 25 measurement end by
The squeezing action of the inner wall of measured bore overcomes the active force of tension spring, when doing axial stretching motion, the rack gear of movable gauge head 25
Transmission toothing applies tangential active force to the meshing teeth of convex gear 9, and convex gear 9 starts turning, and then mandril 8 is pushed to move
Dynamic, the dial gauge beat of pointer reaches measurement purpose.Due to doing reciprocally swinging and movable gauge head around pivot center when measurement matrix
When not along the axial stretching of movable gauge head, the pointer of dial gauge is not swung, only when movable gauge head is along its axial stretching,
The pointer of dial gauge can just be swung, and avoiding problems the generations that the mistake of dial gauge surveys phenomenon, improve the reliability of measurement data.
The working principle of centering machine of the invention: since two positioning support pins 18 are separately positioned on by fixed gauge head 1
Axis and table bar 2 axis composition plane arranged on left and right sides and symmetrically, in the line of two positioning support pins 18
Point is overlapped with the axis of fixed gauge head 1, the location sphere of two such positioning support pin 18, the top spherical surface of fixation gauge head 1
Three vertex are in a plane, and the line on the vertex of the location sphere of two positioning support pins 18 and fixed gauge head 1
Always vertical and line center is overlapped axis with the axis of fixed gauge head 1.After measurement matrix is inserted into measured bore, pressing
Under the action of spring 20, the top spherical surface of the location sphere of two positioning support pins 18 and fixed gauge head 1 is kept and measured bore
Hole wall press contact, determine a round principle according to 3 points, three above-mentioned vertex are on a circle, two positioning
Support pin 18 location sphere vertex line be circle on string, due to fixation gauge head 1 axis cross string center and always with string
Vertically, so the axis of fixed gauge head 1 is overlapped with diameter of a circle.Again due to the axis of the axis of movable gauge head 25 and fixed gauge head 1
Line is overlapped, and the measurement spherical surface of movable gauge head 25 is contacted with the press of the inner wall of measured bore always under the action of the second tension spring,
So the line on the vertex of the top spherical surface of the vertex of the measurement spherical surface of movable gauge head 25 and fixed gauge head 1 is exactly measured bore
Diameter.When diameter of a circle size changes, two positioning support pins 18 drive the backing pin 21 of guide cylinder 19 to squeeze pressure spring
It 20 and is slided above and below in the guiding kidney slot of lower supporting block 17.Vertex by the location sphere of two positioning support pins 18 is true
The length of fixed string changes, but due to the axis of fixed gauge head 1 always midpoint vertical with the string and the string always with
The axis of fixed gauge head 1 is overlapped, so the vertex line of the measurement spherical surface of the top spherical surface of fixed gauge head 1 and movable gauge head 25 is still
For diameter of a circle.
In the use of the present invention, firstly, selecting the fixation gauge head 1 of respective range to be installed to according to workpiece size to be measured
In the upper supporting block 22 for measuring matrix.Then the measurement of the top spherical surface and movable gauge head 25 of gauge head 1 is fixed with miking
Size between spherical surface with hand moving wrench 14 or is unclamped, under the action of bracing wire 11 and the first tension spring 26, fixed 1 He of gauge head
Movable gauge head 25 around pin shaft 5 does reciprocally swinging with measurement matrix, due to the measurement spherical surface of movable gauge head 25 at this time and does not stress, convex
Gear does not rotate, and would not also push mandril mobile, adjust the good table in 3 dial school of dial gauge at this time.Then, will measurement matrix into
Spanner 14 is pulled or unclamped to the measurement position for entering deep hole, allows and measures matrix reciprocally swinging in measured bore.When movable gauge head 25
Measurement spherical surface when not stressing, convex gear not will push that mandril is mobile, and the gauge outfit contact that mandril not will push dial gauge is mobile, hundred
Indicator needles are not swung.When the measurement spherical surface of movable gauge head 25 is squeezed by the inner wall of measured bore, movable gauge head 25 is to admittedly
The movement of gauge head side is determined, thus the meshing teeth for the convex gear 9 for engaging the rack-driving toothing drive of movable gauge head 25
The cam part of rotation, convex gear 9 pushes mandril 8 to move to the right, and mandril 8 pushes the gauge outfit contact of dial gauge 3, to make percentage
3 indicator of table is swung, and displacement transmission mechanism so just converts mandril for the displacement variable of the linear motion of movable gauge head 25
The displacement variable of linear motion, and then it is converted into the displacement variable of the gauge outfit contact of dial gauge 3,3 beat of pointer of dial gauge,
Reach measurement purpose.
The above are the preferred embodiment of the present invention, and in other embodiments, such as swing driving mechanism can also be use
Gear and rack teeth mechanism, the convex gear that gear is installed on measurement matrix and in gear and displacement transmission mechanism share a shaft,
The rack gear engaged with the gear is slidably arranged on table bar, is driven and is surveyed and then pushing or retracting rack gear and rotate come sliding tooth wheel
Amount matrix is swung to the right or to the left.
In other embodiments, above-mentioned displacement transmission mechanism can also be the gear being rotatably arranged on pin shaft and setting
Rack gear on the side of the guide section of movable gauge head, the wheel hub of the gear are provided with the press being bonded with the promote-side of mandril
Groove, when gear rotation, since the depth consecutive variations of press groove are to push the promote-side of mandril to move left and right.
Above-mentioned centering machine can also be that centering machine can be including a centering frame, and frame of feeling relieved is outside by a bit
Extend the y-type structure of two mandrils and a support rod, wherein support rod is to be arranged thereon along the telescopic bar of own axes
There is the spring that bar can be moved up and down, support rod is mounted in lower supporting block, and axis is parallel with the movable axis of gauge head；Two
The length of mandril is unanimously and the spherical surface end part of two mandrils is not consistent at a distance from the measurement end of above-mentioned movable gauge head, thus
It can guarantee that while movable gauge head moves up and down, two mandrils move up and down under the telescopic action of support rod, adjustment measurement
The angle of frame, guaranteeing that two mandrils are pushed up to the axis on the inner wall of gaging hole, that is, can guarantee movable gauge head is the via hole center of circle
Straight line.
Centering machine can also be the telescopic rod by distinguishing outwardly extending two T-types in the two sides of lower supporting block,
In, the T-type lower end of two telescopic rods is fixed in lower supporting block, and be provided in the upright bar of T-type can self extending structure, so as to
Guarantee that the cross bar of T-type can be mobile in the axis direction of T-type upright bar, it is only necessary to guarantee the reversed of the T-type upright bar of two telescopic rods
Extend intersection point to intersect on the axis of movable gauge head, when treating gaging hole and measuring, by adjusting the angle of measurement bay, guarantee
The inner wall of two boom ends of the T-type cross bar of the telescopic rod of lower supporting block two sides energy contact hole, since T-type cross bar composition is to be measured
A string of circle where hole, therefore, the intersection point of the perpendicular bisector of two strings is the center of circle, due to it is found that the axis of movable gauge head is worn
Cross the center of circle, measured by length be diameter.
Above-mentioned gauge head matrix is to provide the structure of support and positioning for fixed gauge head, movable gauge head and displacement transmission mechanism etc.
Part, in the specific implementation, structure according to the guide frame of selected displacement transmission mechanism and movable gauge head and can make activity
Gauge head keep down trend spring mounting means difference and make the change of adaptability, these change those skilled in the art's roots
It may be implemented according to design common sense.
Claims (8)
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| CN201610897261.7A CN106556316B (en) | 2016-10-14 | 2016-10-14 | A kind of dial bore gage measurement bay |
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| CN201610897261.7A CN106556316B (en) | 2016-10-14 | 2016-10-14 | A kind of dial bore gage measurement bay |
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| CN110887444A (en) * | 2018-09-10 | 2020-03-17 | 上海履善精工科技有限公司 | An inner diameter measuring instrument |
| CN110906833B (en) * | 2019-11-12 | 2024-07-19 | 安庆中船柴油机有限公司 | Portable shallow hole measurement gauge |
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