CN109900188A - General measuring instrument and measurement method with double measurement tables - Google Patents
General measuring instrument and measurement method with double measurement tables Download PDFInfo
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- CN109900188A CN109900188A CN201910254088.2A CN201910254088A CN109900188A CN 109900188 A CN109900188 A CN 109900188A CN 201910254088 A CN201910254088 A CN 201910254088A CN 109900188 A CN109900188 A CN 109900188A
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Abstract
A kind of general measuring instrument and measurement method with double measurement tables, comprising: pedestal, slide bar, bracket, bracket, support arm and measuring rod, slide bar level are set on pedestal, and support vertical is fixed on pedestal one end, and support arm is installed vertically on bracket；The support arm is equipped with upward bending part, measuring rod and bending part pin connection far from bracket one end, and measuring rod is equipped with a support rod far from bracket one end, is fixed with a slide plate at the top of bar, and the nearly bracket one end of the measuring rod is equipped with measurement point；Nearly measurement point is equipped with the first universal bar on slide bar, is equipped with the first dial gauge at the top of universal bar；Pedestal one side edge is machined with sliding rail along base length direction, and the sliding rail is equipped with fixable sliding seat, and the second universal bar is equipped on sliding seat, is equipped with the second dial gauge at the top of the second universal bar；The present invention is used for while measuring the inner wall error and verticality of unsmooth workpiece, and measurement accuracy is easy to operate up to 0.01mm, adapts to various workpieces.
Description
Technical field
The invention belongs to measure equipment technology field, and in particular to a kind of general measuring instrument and measurement with double measurement tables
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 one kind to have double measurement tables, can measure workpiece inner wall error and verticality simultaneously, essence
Spend the general measuring instrument up to 0.01mm.
It is a further object to provide a kind of easy to operate, adapt to a variety of caliber workpiece calibrations has double survey
The general measuring instrument of scale.
In order to solve the above-mentioned technical problem, the invention discloses a kind of general measuring instrument with double measurement tables, it is used for work
The high-acruracy survey of part inner cavity, comprising: pedestal, slide bar, bracket, bracket, support arm and measuring rod, the pedestal are a rectangle
Steel plate, long sliding slot is machined on pedestal along its length, and the slide bar is set in 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 the first universal bar on the slide bar, is equipped with the first dial gauge at the top of universal bar；
The pedestal one side edge is machined with sliding rail along base length direction, and the sliding rail is equipped with fixable sliding seat, sliding
Second universal bar is installed on dynamic seat, the second dial gauge is installed at the top of the second 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 susceptor surface is machined with first sliding groove group and second sliding slot group along base 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 pedestal, and to be parallel to pedestal
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；
Slide bar nearly bracket one end bottom is equipped with pulley.
Preferably, the long sliding slot is set to pedestal top, middle part or bottom, and the length of the slide bar is greater than workpiece for measurement
Length, maximum sliding stroke of the slide bar in long sliding slot be not less than workpiece for measurement length.
Preferably, restraining position ring block is installed on nearly bracket one end on the support arm, limit is protruded into the end of the measuring rod
In the ring of position.
Preferably, adjusting knob, adjustable side and the slide bar phase of the adjusting knob are equipped at the closely long sliding slot of the pedestal
It contacts, damping fin is installed on the adjustable side, keeps sliding of the slide bar in long sliding slot easy to manually control.
Preferably, the spacing of every column is less than the diameter of workpiece, height and the workpiece size phase of the column
It adapts to, can be rotated after being placed in workpiece in second bearing.
Preferably, second weight supporting slide is in second sliding slot group when lowest part, the height phase of all second bearings
Together.
Preferably, the bending part is set to the midpoint between measurement point and slide plate.
It preferably, 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 the general measuring instruments with double measurement tables, comprising:
1) measurement of internal diameter error:
S1. it is checked before measurement: the contact of the first dial gauge mutually being separated with the measurement point of measuring rod, checks the bullet of elastic device
Whether property, the rotation of each bearing, the rotation of measuring rod are 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 the first dial gauge is connected with the measurement point of measuring rod
Touching, the zeroing of the first dial gauge；Slide bar is pushed, the slide plate of measuring rod is made to be moved to required measurement position, adjusts adjusting knob, it is fixed
Or at the uniform velocity slide bar is pushed to measure；
S4. measure: the difference of promotion 360 degree of autobiographies of workpiece, the first dial gauge degree of observation, full-scale reading and least count is
For end surface error to be measured, error amount is calculated, and judges whether internal diameter error is qualified with this；
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 first or second dial gauge is contacted with end face to be measured, the zeroing of first or second dial gauge,
S30. it measures: 360 degree of rotational workpieces, observing the jerk value of first or second percentage meter reading, full-scale reading and minimum
The difference of reading is end surface error to be measured, calculates error amount, and judge whether verticality is qualified with this；
Wherein, the measurement of internal diameter error and the measurement of verticality can carry out simultaneously.
Preferably, in the S30, workpiece one end is kept in contact with first bearing always when measurement.
The general measuring instrument with double measurement tables of the invention, has at least the following advantages:
1. structure is simple, easy to maintain, internal diameter error measure precision reaches as high as 0.01mm.
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. two dial gauges are simultaneously operable, it is respectively used to the measurement to workpiece diameter error and verticality, is had preferable
Composite measurement performance, improve detection efficiency.
7. being suitable for the measurement of Multiple Type workpiece diameter.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of general measuring instrument with double measurement tables.
Fig. 2 is that a kind of side structure schematic view of general measuring instrument with double measurement tables (is mounted with universal bar and percentage
Table).
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, 110- sliding rail, 120- sliding seat, the second universal bar of 121-, the second dial gauge of 122-,
130- first sliding groove group, 140- second sliding slot group, the inclined-plane 141-, 150- adjusting knob, 2- slide bar, the first universal bar of 210-,
The first dial gauge of 211-, 3- bracket, 4- support arm, 401- bending part, 5- measuring rod；501- support rod, 502- slide plate, 503- are surveyed
Measure point, 6- long sliding slot, 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 general measuring instrument with double measurement tables, the high-acruracy survey for workpiece lumen, comprising: bottom
Seat 1, slide bar 2, bracket 7, bracket 3, support arm 4 and measuring rod 5, the pedestal are a rectangle steel plate, along length side on pedestal 1
To long sliding slot 6 is machined with, the slide bar 2 is set in long sliding slot 6 and is adapted with long sliding slot；
The bracket 3 is perpendicularly fixed at 2 one end of slide bar, and the support arm 4 is height-adjustable to be installed vertically on bracket 3, makes to prop up
Brace 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 3 one end of bracket,
Measuring rod 5 is set to rotate along pin connection point；
Gag lever post 8 is vertically equipped in the middle part of nearly 3 one end of bracket of the pedestal 1, the gag lever post top horizontal is equipped with first bearing
801, first bearing 801 is coaxial with gag lever post 8；
The measuring rod 5 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 the first universal bar 210 on the slide bar 2, is equipped with the first dial gauge 211 at the top of universal bar；
The pedestal one side edge is machined with sliding rail 110 along base length direction, and the sliding rail is equipped with fixable sliding seat
120, the second universal bar 121 is installed on sliding seat, the second dial gauge 122 is installed at the top of the second universal bar；The essence of dial gauge
Degree is 0.01mm, and 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.
1 surface of pedestal is machined with first sliding groove group 130 and second sliding slot group along base length direction in tandem
140；First sliding groove group 130 is set to nearly bracket side, and first sliding groove group 130 and second sliding slot group 140 are respectively comprising a pair of of short groove；
Each pair of short groove is symmetrically set in pedestal middle line two sides；
The bracket 7 includes the first weight supporting slide 710 and the second weight supporting slide 720, and the first weight supporting slide 710, the second load-bearing are sliding
720 bottom of block is equipped with the protrusion 730 adaptable with first sliding groove group 130, second sliding slot group 140；
First weight supporting slide 710 is slided along first sliding groove group 130, and second weight supporting slide 720 is along second sliding slot group 140
It slides, is respectively provided with a column 9 on the first weight supporting slide and the second weight supporting slide, column is respectively symmetrically set to the first weight supporting slide
710 and 720 both ends of the second weight supporting slide；It is fitted with second bearing 901 at the top of each column, second bearing is the bottom of perpendicular to
Seat setting, and the length direction to be parallel to pedestal is rotated as axis；
The sliding slot bottom of the second sliding slot group 140 is inclined-plane 141, and the nearly bracket one end on inclined-plane is low spot；The second sliding slot
140 edges of group are labeled with scale, and scale indicates the bevel altitude of position；The inclined-plane is plane；It inclined-plane can be right
The height of second weight supporting slide is adjusted, so that it is horizontal positioned to facilitate workpiece to complete.
The protrusion of the inclined-plane 141 and second sliding slot group 140 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, and measurement result inaccuracy or workpiece is caused to be put
Set unstable generation safety problem；It, can be to avoid 710 He of the first weight supporting slide after workpiece puts bracket due to the presence of anti-skid chequer
The generation of second weight supporting slide 720 is slided again, to guarantee that measurement result is accurate.
2 nearly bracket one end bottom of slide bar is equipped with pulley 11.Pulley is slided along ground grading or peripheral track, to slide bar
Play the role of Auxiliary support, the abrasion of slide bar or sliding slot can be prevented, and movement of the slide bar in sliding slot is enable to go on smoothly.
The long sliding slot 6 is set to the middle of the base, and the length of the slide bar 2 is greater than the length of workpiece for measurement, and slide bar is slided long
Maximum sliding stroke in slot is not less than the length of workpiece for measurement.When measurement, without moving horizontally workpiece, made by mobile slide bar
Measuring rod changes position, can easily carry out the measurement of workpiece different location, double collaboration or one also achievable measurement is grasped
Make, reduces labor intensity.In general, the length of slide bar is advisable in 1.5-2 times of Workpiece length.
Restraining position ring block is installed on nearly bracket one end on the support arm 4, the end of the measuring rod 5 is protruded into stop collar.
Adjusting knob 150 is equipped at the nearly long sliding slot of the pedestal 1, the adjustable side of the adjusting knob is in contact with slide bar 2,
Damping fin is installed on the adjustable side, keeps sliding of the slide bar in long sliding slot easy to manually control.
The spacing of every column 9 is less than the diameter of workpiece A, and the height and workpiece size of the column are adapted, make
Workpiece can be rotated after being placed in second bearing 901.When workpiece is placed in second bearing, it at least should ensure that workpiece does not rub with pedestal
It wipes, enables an operator to easy turning of work piece and measure.
Second weight supporting slide 720 is in second sliding slot group 140 when lowest part, the height phase of all second bearings 901
Together.It is 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, makes 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. it is checked before measurement: the contact of the first dial gauge 210 mutually being separated with the measurement point of measuring rod, checks elastic device
Whether rotation, the rotation of measuring rod of elastic, each bearing are normal；
S2. it is horizontally arranged workpiece: when workpiece A outer diameter is consistent or locally consistent, being adjusted to extreme lower position for sliding 720 pieces of the second load-bearing,
The position for adjusting the first weight supporting slide 710 keeps workpiece horizontal and stable is placed on bracket 7；
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 710, outer diameter difference of the workpiece near the first weight supporting slide and the second weight supporting slide position is measured, according to difference certain
The height of the second weight supporting slide of mobile adjustment, enables workpiece to be horizontally arranged in range；
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 A internal chamber wall, then by the survey of the contact of the first dial gauge and measuring rod
Amount point is in contact, the zeroing of the first dial gauge；Slide bar is pushed, the slide plate of measuring rod is made to be moved to required measurement position, adjustment is adjusted
Knob 150, fixed or at the uniform velocity promotion slide bar measure；
S4. measure: the difference of promotion 360 degree of autobiographies of workpiece, the first dial gauge degree of observation, full-scale reading and least count is
For end surface error to be measured, error amount is calculated, and judges whether internal diameter error is qualified with this；
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 first or second dial gauge is contacted with end face to be measured, the zeroing of first or second dial gauge,
S30. it measures: 360 degree of rotational workpieces, observing the jerk value of first or second percentage meter reading, full-scale reading and minimum
The difference of reading is end surface error to be measured, calculates error amount, and judge whether verticality is qualified with this；
Wherein, the measurement of internal diameter error and the measurement of verticality can carry out simultaneously.
In the S30, workpiece one end is kept in contact with first bearing always when measurement, otherwise may result in measurement result
Inaccuracy.
Embodiment 4
As shown in figure 4, similar to Example 1, difference is, the sliding slot bottom of the second sliding slot group 140 is more gradients
Inclined-plane 141.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 general measuring instrument with double measurement tables, the high-acruracy survey for workpiece lumen characterized by comprising
Pedestal, slide bar, bracket, bracket, support arm and measuring rod, the pedestal are a rectangle steel plate, are added along its length on pedestal
Work has long sliding slot, 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 the first universal bar on the slide bar, is equipped with the first dial gauge at the top of universal bar；
The pedestal one side edge is machined with sliding rail along base length direction, and the sliding rail is equipped with fixable sliding seat, sliding
Second universal bar is installed on dynamic seat, the second dial gauge is installed at the top of the second 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 susceptor surface is machined with first sliding groove group and second sliding slot group along base 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 pedestal, and to be parallel to pedestal
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；
Slide bar nearly bracket one end bottom is equipped with pulley.
2. the general measuring instrument with double measurement tables as described in claim 1, which is characterized in that the long sliding slot is set to pedestal
Top, middle part or bottom, the length of the slide bar are greater than the length of workpiece for measurement, maximum sliding stroke of the slide bar in long sliding slot
Not less than the length of workpiece for measurement.
3. the general measuring instrument with double measurement tables as claimed in claim 2, which is characterized in that nearly bracket on the support arm
Restraining position ring block is installed, the end of the measuring rod is protruded into stop collar on one end.
4. the general measuring instrument with double measurement tables as claimed in claim 3, which is characterized in that at the closely long sliding slot of the pedestal
Equipped with adjusting knob, the adjustable side of the adjusting knob is in contact with slide bar, is equipped with one on the adjustable side of the adjusting knob
Damping fin keeps sliding of the slide bar in long sliding slot easy to manually control.
5. the general measuring instrument with double measurement tables as described in claim 1, which is characterized in that the spacing of every column
Less than the diameter of workpiece, the height and workpiece size of the column are adapted, and can be rotated after being placed in workpiece in second bearing.
6. the general measuring instrument with double measurement tables as claimed in claim 5, which is characterized in that second weight supporting slide exists
In second sliding slot group when lowest part, the height of all second bearings is identical.
7. the general measuring instrument with double measurement tables as described in claim 1, which is characterized in that the bending part is set to measurement
Midpoint between point and slide plate.
8. the general measuring instrument with double measurement tables as claimed in claim 7, which is characterized in that be protrusion at the top of the slide plate
Cambered surface, and cambered surface curvature be greater than workpiece lumen curvature.
9. a kind of measurement method for the general measuring instrument with double measurement tables described in claim 1, which is characterized in that packet
It includes:
1) measurement of internal diameter error:
S1. it is checked before measurement: the contact of the first dial gauge mutually being separated with the measurement point of measuring rod, checks the bullet of elastic device
Whether property, the rotation of each bearing, the rotation of measuring rod are 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 the first dial gauge is connected with the measurement point of measuring rod
Touching, the zeroing of the first dial gauge；Slide bar is pushed, the slide plate of measuring rod is made to be moved to required measurement position, adjusts adjusting knob, it is fixed
Or at the uniform velocity slide bar is pushed to measure；
S4. measure: the difference of promotion 360 degree of autobiographies of workpiece, the first dial gauge degree of observation, full-scale reading and least count is
For end surface error to be measured, error amount is calculated, and judges whether internal diameter error is qualified with this；
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 first or second dial gauge is contacted with end face to be measured, the zeroing of first or second dial gauge；
S30. it measures: 360 degree of rotational workpieces, observing the jerk value of first or second percentage meter reading, full-scale reading and minimum
The difference of reading is end surface error to be measured, calculates error amount, and judge whether verticality is qualified with this；
Wherein, the measurement of internal diameter error and the measurement of verticality can carry out simultaneously.
10. measurement method as claimed in claim 9, which is characterized in that workpiece one end is always in the S4 and S30, when measurement
It is kept in contact with first bearing.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110657761A (en) * | 2019-09-05 | 2020-01-07 | 人本集团有限公司 | Auxiliary device for observing bearing ring channel |
| CN113483615A (en) * | 2021-06-25 | 2021-10-08 | 东风柳州汽车有限公司 | Auto parts detects structure |
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| CN110657761A (en) * | 2019-09-05 | 2020-01-07 | 人本集团有限公司 | Auxiliary device for observing bearing ring channel |
| CN113483615A (en) * | 2021-06-25 | 2021-10-08 | 东风柳州汽车有限公司 | Auto parts detects structure |
| CN113483615B (en) * | 2021-06-25 | 2022-09-30 | 东风柳州汽车有限公司 | Auto parts detects structure |
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