CN109974557A - Rotatable general measuring instrument and measurement method - Google Patents
Rotatable general measuring instrument and measurement method Download PDFInfo
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- CN109974557A CN109974557A CN201910254089.7A CN201910254089A CN109974557A CN 109974557 A CN109974557 A CN 109974557A CN 201910254089 A CN201910254089 A CN 201910254089A CN 109974557 A CN109974557 A CN 109974557A
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- measurement
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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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- 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
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B5/245—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing perpendicularity
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- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
A kind of rotatable general measuring instrument and measurement method, high-acruracy survey for workpiece lumen, it include: pedestal, slide bar, supporting plate, bracket, bracket, support arm and measuring rod, support vertical is fixed on slide bar one end, the support arm is height-adjustable to be installed vertically on bracket, and support arm is arranged in parallel with pedestal；The supporting plate is arranged in parallel with pedestal, and base bearing is equipped between supporting plate and pedestal, and outer ring and the supporting plate bottom of base bearing are welded and fixed, and the inner ring of base bearing is fixed by main shaft and the pedestal installation being perpendicularly fixed on pedestal, makes the supporting plate can be along main axis；The present invention easily can make workpiece turn around when measuring, workpiece another part is detected or rechecked to convenient, and the necessary length of slide bar, support arm, measuring rod is made to shorten nearly half, it greatly reduces the entire length of the present apparatus, amplifies due to slide bar and its row at measurement error caused by too long when reducing measurement.
Description
Technical field
The invention belongs to measure equipment technology field, and in particular to a kind of rotatable general measuring instrument and measurement method.
Background technique
It is high to required precision in the processing to partial tube, it is raw in the processing of aerial bomb by taking aerial bomb as an example
It is high to the shell requirement on machining accuracy of part aerial bomb in production, to guarantee bomb in disengaging magazine, dispensing, transmitting or quick-fried
Energy smooth operation when fried, it is desirable that the machining accuracy error of shell is in grade.
In the processing of housing cavity, several lines are processed in meeting on the inner wall of the housing, inner walls surface is divided into
Multiple rules or irregular diamond blocks make in inner walls in " pineapple peel " shape, it is ensured that depth of lines it is uniform, to guarantee
Shell increases lethality in the crushing effect of explosion time.
Particularly with the aerial bomb of emission type, it is desirable that any one circumferential section wall thickness misses in aerial bomb shell case main body
Difference is no more than 1mm, and due to the inhomogeneities of inner wall surface, general optoelectronic detecting device, ultrasonic detecting equipment etc. can not
It completes.
In addition, also having very high requirement to verticality in the shell processing of aerial bomb, needing through different instruments
It is tested, is comparatively more troublesome.
In view of this, it is necessary to propose it is a kind of can composite measurement inner wall error and verticality, facilitate operation, measurement accuracy height
Measuring instrument.
Summary of the invention
The object of the present invention is to provide rotatable composite measurements that is a kind of easy to operate, workpiece being made to turn around in measurement
Instrument.
It is a further object to provide one kind to adapt to a variety of caliber workpiece calibrations, measurement workpiece inner wall error essence
Spend the rotatable general measuring instrument up to 0.01mm.
In order to solve the above-mentioned technical problem, the invention discloses a kind of rotatable general measuring instruments, for workpiece lumen
High-acruracy survey, comprising: pedestal, slide bar, supporting plate, bracket, bracket, support arm and measuring rod, the pedestal are a rectangular bar of steel
Plate, long sliding slot is machined on pedestal along its length, and the slide bar is set in the long sliding slot and is adapted with long sliding slot；
The support vertical is fixed on slide bar one end, and the support arm is height-adjustable to be installed vertically on bracket, makes support arm
It is arranged in parallel with pedestal；
The support arm is equipped with upward bending part, the measuring rod and bending part pin connection far from bracket one end, makes measuring rod
It can be rotated along pin connection point；
The pedestal is vertically equipped with gag lever post in the middle part of nearly bracket one end, and the gag lever post top horizontal is equipped with first bearing, the
One bearing is coaxial with gag lever post；
The measuring rod is equipped with a support rod far from bracket one end top, and support bar top is fixed with a slide plate, the measuring rod
Nearly bracket one end is equipped with measurement point, and the measurement point is a boss；
Nearly measurement point is equipped with universal bar on the slide bar, is equipped with dial gauge at the top of universal bar；
Elastic device is equipped between the support arm and measuring rod, for making slide plate keep tilting state, slide plate upper end when making to detect
It can fit always with workpiece lumen wall；
The supporting plate is arranged in parallel with pedestal, and base bearing is equipped between supporting plate and pedestal, and the outer ring and supporting plate bottom of base bearing are welded
Fixed, the inner ring of base bearing is fixed by main shaft and the pedestal installation being perpendicularly fixed on pedestal, makes the supporting plate can be along main shaft
Rotation；
It is equipped with telescopic pilot pin in the middle part of the nearly bracket one side edge of the supporting plate, is processed on the pedestal immediately below the pilot pin
There is location hole, there are two the location holes, and is symmetrical arranged centered on main shaft；The pilot pin of the supporting plate is inserted in any positioning
When in hole, the middle line of supporting plate is all parallel with the length direction of bottom plate；
The supporting plate surface is machined with first sliding groove group and second sliding slot group along pallet length direction in tandem；First sliding groove
It is mounted on nearly bracket side, first sliding groove group and second sliding slot group respectively include a pair of of short groove；Each pair of short groove is symmetrically set in bottom
Seat middle line two sides；
The bracket includes the first weight supporting slide and the second weight supporting slide, and the first weight supporting slide, the second weight supporting slide bottom are equipped with
The adaptable protrusion with first sliding groove group, second sliding slot group；
First weight supporting slide is slided along first sliding groove group, and second weight supporting slide is slided along second sliding slot group, and first holds
A column is respectively provided on weighty slider and the second weight supporting slide, column is respectively symmetrically set to the first weight supporting slide and the second load-bearing is sliding
Block both ends；Second bearing is fitted at the top of each column, second bearing is arranged perpendicular to supporting plate, and to be parallel to supporting plate
Length direction be axis rotation；
The sliding slot bottom of the second sliding slot group is inclined-plane, and the nearly bracket one end on inclined-plane is low spot；Second sliding slot group edge
It is labeled with scale, scale indicates the bevel altitude of position；The inclined-plane is the inclined-plane of plane or more gradients；
The protrusion of the inclined-plane and second sliding slot group is equipped with the anti-skid chequer to match；
Restraining position ring block is installed on nearly bracket one end on the support arm, the end of the measuring rod is protruded into stop collar；
Slide bar nearly bracket one end bottom is equipped with pulley.
The base bearing is unilateral bearing；The gag lever post is telescopic rod.
The long sliding slot is set to pedestal top, middle part or bottom, and the length of the slide bar is greater than the length of workpiece for measurement
1/2, maximum sliding stroke of the slide bar in long sliding slot is not less than the length 1/2 of workpiece for measurement.
Adjusting knob is equipped at the closely long sliding slot of the pedestal, the adjustable side of the adjusting knob is in contact with slide bar, described
Damping fin is installed on adjustable side, keeps sliding of the slide bar in long sliding slot easy to manually control.
The spacing of every column is less than the diameter of workpiece, and the height and workpiece size of the column are adapted, and makes work
Part can be rotated after being placed in second bearing.
For second weight supporting slide in second sliding slot group when lowest part, the height of all second bearings is identical.
The bending part is set to the midpoint between measurement point and slide plate.
It is the cambered surface of protrusion at the top of the slide plate, and cambered surface curvature is greater than the curvature of workpiece lumen.
A kind of measurement method for rotatable general measuring instrument, comprising:
1) measurement of internal diameter error:
S1. it is checked before measurement: the contact of dial gauge mutually being separated with the measurement point of measuring rod, checks the elastic, each of elastic device
The rotation of bearing, the rotation of measuring rod, gag lever post and pilot pin it is flexible whether normal；
S2. it is horizontally arranged workpiece: when workpiece outer diameter is consistent or locally consistent, the second weight supporting slide being adjusted to extreme lower position, is adjusted
The position of first weight supporting slide keeps workpiece horizontal and stable is placed on bracket；
When workpiece outer diameter is inconsistent, first workpiece is placed on bracket, so that workpiece outer diameter larger one is placed on the first load-bearing sliding
On block, outer diameter difference of the workpiece near the first weight supporting slide and the second weight supporting slide position is measured, according to difference in certain model
The height for enclosing the second weight supporting slide of interior mobile adjustment, enables workpiece to be horizontally arranged；
S3. it adjusts: slide plate being in contact with workpiece lumen wall, then the contact of dial gauge is in contact with the measurement point of measuring rod,
Dial gauge zeroing；Slide bar is pushed, the slide plate of measuring rod is made to be moved to required measurement position, adjusts adjusting knob；
S4. measure: at the uniform velocity or low speed pushes slide bar to advance, while pushing 360 degree of autobiographies of workpiece, observes dial gauge degree, most
The difference of big reading and least count is end surface error to be measured, calculates error amount, and judge whether internal diameter error is qualified with this；
S5. it rechecks or does not examine part measurement: pulling up pilot pin, fall gag lever post, rotate supporting plate 180 degree, so that workpiece is turned around, will determine
Position needle reinserts location hole, and ensures that supporting plate does not rock, and according to method in S4, recheck to workpiece or does not examine portion to workpiece
Divide and measures；
2) measurement of verticality:
S10. it installs: workpiece being lain in a horizontal plane on bracket according to the method for S2, workpiece one end is made to withstand first bearing；
S20. it adjusts: the contact of dial gauge is contacted with end face to be measured, dial gauge zeroing；
S30. it measures: 360 degree of rotational workpieces, observing the jerk value of percentage meter reading, the difference of full-scale reading and least count
End surface error as to be measured calculates error amount, and judges whether verticality is qualified with this；
S40. part measurement is not examined: so that workpiece is turned around according to method in S5, is not examined part to workpiece and is measured.
In the S30, workpiece one end is kept in contact with first bearing always when measurement.
Rotatable general measuring instrument of the invention, has at least the following advantages:
1. easily workpiece can be made to turn around when measurement, so that convenient detected or rechecked to workpiece another part, and
So that the necessary length of slide bar, support arm, measuring rod shortens nearly half, the entire length of the present apparatus is greatly reduced, is reduced
Amplify due to slide bar and its row at measurement error caused by too long when measurement.
2. compared to optoelectronic detecting device, ultrasonic detecting equipment, although detection efficiency is lower, not only for inner wall
The detections such as the internal diameter error of sliding workpiece, with very high detection accuracy, and commonly optoelectronic detecting device and ultrasonic detecting equipment
This generic task can not be competent at.
3. measurement is easy to operate, fault-tolerance is preferable, can be used for the test, sampling observation and full inspection of workpiece lumen.
4. when measurement, the measurement of workpiece different location can be easily carried out by mobile slide bar, without moving horizontally
Workpiece, also achievable measurement operates for one, reduces labor intensity, reduces the safety that may occur due to moving horizontally workpiece
Problem.
5. the second weight supporting slide height is adjustable, the workpiece for keeping the present invention inconsistent for outer diameter can also obtain accurate survey
Measure result.
6. can also be used for the measurement to workpiece verticality simultaneously, there is preferable composite measurement performance.
7. being suitable for the measurement of Multiple Type workpiece diameter.
8. structure is simple, easy to maintain, internal diameter error measure precision reaches as high as 0.01mm.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of rotatable general measuring instrument.
Fig. 2 is a kind of side structure schematic view (being mounted with universal bar and dial gauge) of rotatable general measuring instrument.
Fig. 3 is a kind of sliding slot bottom substance schematic diagram of second sliding slot group.
Fig. 4 is the sliding slot bottom substance schematic diagram of another second sliding slot group.
Figure label are as follows: 1- pedestal, 101- long sliding slot, 130- first sliding groove group, 140- second sliding slot group, the inclined-plane 141-,
2- slide bar, 210- universal bar, 211- dial gauge, 3- bracket, 4- support arm, 401- bending part, 402- stop collar, 5- measuring rod；
501- support rod, 502- slide plate, 503- measurement point, 6- supporting plate；610- base bearing, 611- main shaft, 620- pilot pin 621- positioning
Hole, 640- second sliding slot group, the inclined-plane 641-, 7- bracket, the first weight supporting slide of 710-, the second weight supporting slide of 720-, 730- protrusion,
8- gag lever post, 801- first bearing, 9- column, 901- second bearing, 10- elastic device, 11- pulley.
Specific embodiment
Below by embodiment, the present invention is described in further detail, to enable those skilled in the art referring to specification
Text can be implemented accordingly.
Such as " have " it should be appreciated that used herein, "comprising" and " comprising " term are not precluded one or more
The presence or addition of a other elements or combinations thereof.
Embodiment 1
As shown in Figure 1-3, a kind of rotatable general measuring instrument, the high-acruracy survey for workpiece lumen, comprising: pedestal 1, slide bar
2, supporting plate 6, bracket 7, bracket 3, support arm 4 and measuring rod 5, the pedestal is a rectangle steel plate, along length side on pedestal 1
To long sliding slot 101 is machined with, the slide bar 2 is set in the long sliding slot and is adapted with long sliding slot；
The bracket 3 is perpendicularly fixed at 2 one end of slide bar, and the support arm is height-adjustable to be installed vertically on bracket, makes to support
Arm 4 is arranged in parallel with pedestal 1；
The support arm 4 is equipped with upward bending part 401, the measuring rod 5 and 401 pin connection of bending part far from bracket one end,
Measuring rod 5 is set to rotate along pin connection point；
The pedestal is vertically equipped with gag lever post 8 in the middle part of nearly bracket one end, and the gag lever post top horizontal is equipped with first bearing
801, first bearing is coaxial with gag lever post；
The measuring rod is equipped with a support rod 501 far from bracket one end top, and support bar top is fixed with a slide plate 502, described
The nearly bracket one end of measuring rod is equipped with measurement point 503, and the measurement point is a boss；
Nearly measurement point is equipped with universal bar 210 on the slide bar 2, is equipped with dial gauge 211 at the top of universal bar；The precision of dial gauge
For 0.01mm, maximum measurement accuracy of the invention is up to 0.01mm.
It is equipped with elastic device 10 between the support arm 4 and measuring rod 5, for making slide plate 502 keep tilting state, makes to detect
When slide plate upper end can fit always with workpiece lumen wall；The elastic device in spring, stretch cord, elastic pressuring plate one
Kind, the preferred spring of the present embodiment.
The supporting plate 6 is arranged in parallel with pedestal 1, and base bearing 610, the outer ring of base bearing and support are equipped between supporting plate 6 and pedestal
Board bottom portion is welded and fixed, and the inner ring of base bearing is fixed by main shaft 611 and the pedestal installation being perpendicularly fixed on pedestal, makes described
Supporting plate can be along main axis；
Telescopic pilot pin 620 is equipped in the middle part of the supporting plate 6 nearly bracket one side edge, on the pedestal immediately below the pilot pin
It is machined with location hole 621, there are two the location holes, and is symmetrical arranged centered on main shaft 611；The pilot pin of the supporting plate is inserted
When in a positioning hole in office, the middle line of supporting plate is all parallel with the length direction of bottom plate；
6 surface of supporting plate is machined with first sliding groove group 630 and second sliding slot group 640 along pallet length direction in tandem；
First sliding groove is mounted on nearly bracket side, and first sliding groove group and second sliding slot group respectively include a pair of of short groove；Each pair of short groove pair
Claim to be set to pedestal middle line two sides；
The bracket 7 includes the first weight supporting slide 710 and the second weight supporting slide 720, the first weight supporting slide, the second weight supporting slide bottom
Portion is equipped with the protrusion 730 adaptable with first sliding groove group, second sliding slot group；
First weight supporting slide 710 is slided along first sliding groove group 630, and second weight supporting slide 710 is sliding along second sliding slot group
640 are moved, a column 9 is respectively provided on the first weight supporting slide and the second weight supporting slide, it is sliding that column is respectively symmetrically set to the first load-bearing
Block and the second weight supporting slide both ends；It is fitted with second bearing 901 at the top of each column, second bearing is set perpendicular to supporting plate
It sets, and the length direction to be parallel to supporting plate is rotated as axis；
The sliding slot bottom of the second sliding slot group 640 is inclined-plane 641, and the nearly bracket one end on inclined-plane is low spot；The second sliding slot
Group edge is labeled with scale, and scale indicates the bevel altitude of position；The inclined-plane is plane；It inclined-plane can be to second
The height of weight supporting slide is adjusted, so that it is horizontal positioned to facilitate workpiece to complete.
The protrusion 730 of the inclined-plane 641 and second sliding slot group is equipped with the anti-skid chequer to match；Anti-skid chequer can prevent from placing
Opposite sliding occurs in second sliding slot group for the second weight supporting slide when workpiece or measurement, causes measurement result inaccurate；Due to anti-
The presence of sliding line after workpiece puts bracket, can be slided again, to protect to avoid the first weight supporting slide and the generation of the second weight supporting slide
It is accurate to demonstrate,prove measurement result.Due to the presence of anti-skid chequer, without additional fixed weight supporting slide.
Restraining position ring block 402 is installed, stop collar is protruded into the end of the measuring rod on the support arm 4 on nearly bracket one end
It is interior, prevent the excessive damage for causing elastic device of measuring rod amplitude of fluctuation.
Slide bar nearly bracket one end bottom is equipped with pulley 11.
The base bearing 610 is unilateral bearing；The gag lever post 8 is telescopic rod.
The long sliding slot 101 is set to the middle of the base, and the length of the slide bar is greater than the 1/2 of the length of workpiece for measurement, slide bar
Maximum sliding stroke in long sliding slot is not less than the length 1/2 of workpiece for measurement.In general, the length of sliding rail is in Workpiece length
0.5-1.2 times be advisable, with guarantee workpiece from installation, measurement from first to last, reinspection can go on smoothly.
Adjusting knob 102 is equipped at the closely long sliding slot of the pedestal, the adjustable side of the adjusting knob is in contact with slide bar, institute
It states and damping fin is installed on adjustable side, keep sliding of the slide bar in long sliding slot easy to manually control.Changed by adjusting knob
The resistance that sliding bar is subject to, so that different survey crews be made to find suitable slide bar motive force and driving velocity.
The spacing of every column 9 is less than the diameter of workpiece, and the height and workpiece size of the column are adapted, and makes work
Part can be rotated after being placed in second bearing.When workpiece is placed in second bearing, it at least should ensure that workpiece with supporting plate friction, does not make
Operator can readily turning of work piece measure.
Second weight supporting slide 720 is in second sliding slot group 640 when lowest part, the height phase of all second bearings 901
Together, convenient to be horizontally arranged when workpiece outer diameter is consistent.
The bending part 401 is set to the midpoint between measurement point 503 and slide plate 502.If measuring rod is not with bending part
It, then should be according to the calculation method of lever, to the measurement data of dial gauge multiplied by being evaluated again after corresponding coefficient for midpoint.
It is the cambered surface of protrusion at the top of the slide plate 502, and cambered surface curvature is greater than the curvature of workpiece lumen.Make slide plate in workpiece
Inner wall can be gone on smoothly when sliding, and can filter out influence of the workpiece inner wall surface fine groove to measurement, prevent slide plate quilt
The phenomenon that engaging and damaging measuring rod appearance.
Embodiment 2
The measurement of internal diameter error:
S1. measurement before check: the contact of dial gauge 211 is mutually separated with the measurement point of measuring rod, check elastic device elasticity,
The rotation of each bearing, the rotation of measuring rod, gag lever post and pilot pin it is flexible whether normal；
S2. it is horizontally arranged workpiece: when workpiece outer diameter is consistent or locally consistent, the second weight supporting slide 720 being adjusted to extreme lower position, is adjusted
The position of whole first weight supporting slide keeps workpiece horizontal and stable is placed on bracket；
When workpiece outer diameter is inconsistent, first workpiece is placed on bracket 7, so that workpiece outer diameter larger one is placed on the first load-bearing sliding
On block 710, outer diameter difference of the workpiece near 720 position of the first weight supporting slide 710 and the second weight supporting slide is measured, according to difference
The height for moving the second weight supporting slide of adjustment in a certain range, enables workpiece to be horizontally arranged；
Horizontal positioned workpiece, is the axis and horizontal direction parallel in order to make workpiece, avoids the error therefore generated, and it is quasi- to improve measurement
Exactness.
S3. it adjusts: slide plate 502 is in contact with workpiece lumen wall, then by the measurement point of the contact of dial gauge and measuring rod
It is in contact, dial gauge zeroing；Slide bar is pushed, the slide plate of measuring rod is made to be moved to required measurement position, adjusts adjusting knob；
S4. measure: at the uniform velocity or low speed pushes slide bar 2 to advance, while pushing 360 degree of autobiographies of workpiece, observes dial gauge degree, most
The difference of big reading and least count is end surface error to be measured, calculates error amount, and judge whether internal diameter error is qualified with this；
S5. it rechecks or does not examine part measurement: pulling up pilot pin 620, fall gag lever post 8, rotate supporting plate 180 degree, workpiece is made to turn around,
Pilot pin is reinserted into location hole 621, and ensures that supporting plate does not rock, according to method in S4, reinspection is carried out to workpiece or to work
Part is not examined part and is measured；This greatly shortens the necessary length of slide bar 2, support arm 4, measuring rod 5, reduces the present apparatus
Entire length, amplify due to slide bar and its row at measurement error caused by too long when being avoided as much as possible measurement.
Embodiment 3
The measurement of verticality:
S10. it installs: workpiece being lain in a horizontal plane on bracket according to the method for S2, workpiece one end is made to withstand first bearing；
S20. it adjusts: the contact of dial gauge 211 is contacted with end face to be measured, dial gauge zeroing；
S30. it measures: 360 degree of rotational workpieces, observing the jerk value of percentage meter reading, the difference of full-scale reading and least count
End surface error as to be measured calculates error amount, and judges whether verticality is qualified with this；
S40. part measurement is not examined: so that workpiece is turned around according to method in S5, is not examined part to workpiece and is measured.
In the S30, workpiece one end is kept in contact with first bearing always when measurement, and it is inaccurate otherwise to will lead to measurement result
Really.
Embodiment 4
As shown in figure 4, similar to Example 1, difference is, the sliding slot bottom of the second sliding slot group 640 is more gradients
Inclined-plane 641.Heavier in workpiece, when anti-skid chequer is not enough to prevent the second weight supporting slide from sliding, sliding slot bottom uses more gradient inclined-planes
With better load-bearing and stability.
Although the embodiments of the present invention have been disclosed as above, but its is not only in the description and the implementation listed
With it can be fully applied to various fields suitable for the present invention, for those skilled in the art, can be easily
Realize other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, the present invention is simultaneously unlimited
In specific details and embodiment shown and described herein.
Claims (10)
1. a kind of rotatable general measuring instrument, the high-acruracy survey for workpiece lumen characterized by comprising pedestal, cunning
Bar, supporting plate, bracket, bracket, support arm and measuring rod, the pedestal are a rectangle steel plate, are processed along its length on pedestal
There is long sliding slot, the slide bar is set in the long sliding slot and is adapted with long sliding slot；
The support vertical is fixed on slide bar one end, and the support arm is height-adjustable to be installed vertically on bracket, makes support arm
It is arranged in parallel with pedestal；
The support arm is equipped with upward bending part, the measuring rod and bending part pin connection far from bracket one end, makes measuring rod
It can be rotated along pin connection point；
The pedestal is vertically equipped with gag lever post in the middle part of nearly bracket one end, and the gag lever post top horizontal is equipped with first bearing, the
One bearing is coaxial with gag lever post；
The measuring rod is equipped with a support rod far from bracket one end top, and support bar top is fixed with a slide plate, the measuring rod
Nearly bracket one end is equipped with measurement point, and the measurement point is a boss；
Nearly measurement point is equipped with universal bar on the slide bar, is equipped with dial gauge at the top of universal bar；
Elastic device is equipped between the support arm and measuring rod, for making slide plate keep tilting state, slide plate upper end when making to detect
It can fit always with workpiece lumen wall；
The supporting plate is arranged in parallel with pedestal, and base bearing is equipped between supporting plate and pedestal, and the outer ring and supporting plate bottom of base bearing are welded
Fixed, the inner ring of base bearing is fixed by main shaft and the pedestal installation being perpendicularly fixed on pedestal, makes the supporting plate can be along main shaft
Rotation；
It is equipped with telescopic pilot pin in the middle part of the nearly bracket one side edge of the supporting plate, is processed on the pedestal immediately below the pilot pin
There is location hole, there are two the location holes, and is symmetrical arranged centered on main shaft；The pilot pin of the supporting plate is inserted in any positioning
When in hole, the middle line of supporting plate is all parallel with the length direction of bottom plate；
The supporting plate surface is machined with first sliding groove group and second sliding slot group along pallet length direction in tandem；First sliding groove
It is mounted on nearly bracket side, first sliding groove group and second sliding slot group respectively include a pair of of short groove；Each pair of short groove is symmetrically set in bottom
Seat middle line two sides；
The bracket includes the first weight supporting slide and the second weight supporting slide, and the first weight supporting slide, the second weight supporting slide bottom are equipped with
The adaptable protrusion with first sliding groove group, second sliding slot group；
First weight supporting slide is slided along first sliding groove group, and second weight supporting slide is slided along second sliding slot group, and first holds
A column is respectively provided on weighty slider and the second weight supporting slide, column is respectively symmetrically set to the first weight supporting slide and the second load-bearing is sliding
Block both ends；Second bearing is fitted at the top of each column, second bearing is arranged perpendicular to supporting plate, and to be parallel to supporting plate
Length direction be axis rotation；
The sliding slot bottom of the second sliding slot group is inclined-plane, and the nearly bracket one end on inclined-plane is low spot；Second sliding slot group edge
It is labeled with scale, scale indicates the bevel altitude of position；The inclined-plane is the inclined-plane of plane or more gradients；
The protrusion of the inclined-plane and second sliding slot group is equipped with the anti-skid chequer to match；
Restraining position ring block is installed on nearly bracket one end on the support arm, the end of the measuring rod is protruded into stop collar；
Slide bar nearly bracket one end bottom is equipped with pulley.
2. rotatable general measuring instrument as described in claim 1, which is characterized in that the base bearing is unilateral bearing；It is described
Gag lever post is telescopic rod.
3. rotatable general measuring instrument as claimed in claim 2, which is characterized in that the long sliding slot be set to pedestal top, in
Portion or bottom, the length of the slide bar are greater than the 1/2 of the length of workpiece for measurement, and maximum sliding stroke of the slide bar in long sliding slot is not
Less than the length 1/2 of workpiece for measurement.
4. rotatable general measuring instrument as claimed in claim 3, which is characterized in that be equipped with and adjust at the closely long sliding slot of the pedestal
The adjustable side of knob, the adjusting knob is in contact with slide bar, is equipped with damping fin on the adjustable side, makes slide bar in long sliding slot
Interior sliding is easy to manually control.
5. rotatable general measuring instrument as described in claim 1, which is characterized in that the spacing of every column is less than workpiece
Diameter, the height of the column and workpiece size are adapted, can be rotated after being placed in workpiece in second bearing.
6. rotatable general measuring instrument as claimed in claim 5, which is characterized in that second weight supporting slide is in second sliding slot
In group when lowest part, the height of all second bearings is identical.
7. rotatable general measuring instrument as described in claim 1, which is characterized in that the bending part is set to measurement point and slide plate
Between midpoint.
8. rotatable general measuring instrument as claimed in claim 7, which is characterized in that it is the cambered surface of protrusion at the top of the slide plate,
And cambered surface curvature is greater than the curvature of workpiece lumen.
9. a kind of measurement method for rotatable general measuring instrument described in claim 1 characterized by comprising
1) measurement of internal diameter error:
S1. it is checked before measurement: the contact of dial gauge mutually being separated with the measurement point of measuring rod, checks the elastic, each of elastic device
The rotation of bearing, the rotation of measuring rod, gag lever post and pilot pin it is flexible whether normal；
S2. it is horizontally arranged workpiece: when workpiece outer diameter is consistent or locally consistent, the second weight supporting slide being adjusted to extreme lower position, is adjusted
The position of first weight supporting slide keeps workpiece horizontal and stable is placed on bracket；
When workpiece outer diameter is inconsistent, first workpiece is placed on bracket, so that workpiece outer diameter larger one is placed on the first load-bearing sliding
On block, outer diameter difference of the workpiece near the first weight supporting slide and the second weight supporting slide position is measured, according to difference in certain model
The height for enclosing the second weight supporting slide of interior mobile adjustment, enables workpiece to be horizontally arranged；
S3. it adjusts: slide plate being in contact with workpiece lumen wall, then the contact of dial gauge is in contact with the measurement point of measuring rod,
Dial gauge zeroing；Slide bar is pushed, the slide plate of measuring rod is made to be moved to required measurement position, adjusts adjusting knob；
S4. measure: at the uniform velocity or low speed pushes slide bar to advance, while pushing 360 degree of autobiographies of workpiece, observes dial gauge degree, most
The difference of big reading and least count is end surface error to be measured, calculates error amount, and judge whether internal diameter error is qualified with this；
S5. it rechecks or does not examine part measurement: pulling up pilot pin, fall gag lever post, rotate supporting plate 180 degree, so that workpiece is turned around, will determine
Position needle reinserts location hole, and ensures that supporting plate does not rock, and according to method in S4, recheck to workpiece or does not examine portion to workpiece
Divide and measures；
2) measurement of verticality:
S10. it installs: workpiece being lain in a horizontal plane on bracket according to the method for S2, workpiece one end is made to withstand first bearing；
S20. it adjusts: the contact of dial gauge is contacted with end face to be measured, dial gauge zeroing；
S30. it measures: 360 degree of rotational workpieces, observing the jerk value of percentage meter reading, the difference of full-scale reading and least count
End surface error as to be measured calculates error amount, and judges whether verticality is qualified with this；
S40. part measurement is not examined: so that workpiece is turned around according to method in S5, is not examined part to workpiece and is measured.
10. measurement method as claimed in claim 9, which is characterized in that in the S30, workpiece one end is always with when measurement
One bearing is kept in contact.
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| CN112985214A (en) * | 2021-01-27 | 2021-06-18 | 通鼎互联信息股份有限公司 | Mandrel jumping detection device |
| CN117948858A (en) * | 2024-03-26 | 2024-04-30 | 苏州泽韵精密科技有限公司 | High-precision machining part precision detection device |
| CN117948858B (en) * | 2024-03-26 | 2024-06-04 | 苏州泽韵精密科技有限公司 | High-precision machining part precision detection device |
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