CN108489447A - Detect the pneumatic device of coaxiality of inner hole - Google Patents
Detect the pneumatic device of coaxiality of inner hole Download PDFInfo
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- CN108489447A CN108489447A CN201810013681.3A CN201810013681A CN108489447A CN 108489447 A CN108489447 A CN 108489447A CN 201810013681 A CN201810013681 A CN 201810013681A CN 108489447 A CN108489447 A CN 108489447A
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- 238000005259 measurement Methods 0.000 claims abstract description 53
- 238000001514 detection method Methods 0.000 claims abstract description 25
- 230000036461 convulsion Effects 0.000 claims abstract description 5
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 12
- 238000011156 evaluation Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 5
- 238000000691 measurement method Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 3
- 230000002950 deficient Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
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- 238000004364 calculation method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000004836 empirical method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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- 230000000007 visual effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/22—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring angles or tapers; for testing the alignment of axes
- G01B21/24—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring angles or tapers; for testing the alignment of axes for testing alignment of axes
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The pneumatic device of a kind of detection coaxiality of inner hole disclosed by the invention, it is desirable to provide a kind of easy to operate, clamping is quick, and detection error is smaller, the Pneumatic clamping detection device of flexible adjustment.The technical scheme is that：The trisection radial direction venthole of the clamping disk connection inlet channel of upward clamping workpiece for measurement, each in radial direction venthole, the pneumatic spring push rod leading portion rectangle body of rod connects firmly decile circular arc clamping jaw by same section radial hole shaft end；Air-flow is connected to radial venthole through clamping pan bottom trisection circumferential direction hole, and air-flow pushes pneumatic spring push rod to be promoted to clamping hole axle center, and the decile circular arc clamping jaw for pushing pneumatic spring push rod shaft end to connect firmly, centering compresses workpiece for measurement；Numerical scale table bar measurement head falls into workpiece for measurement endoporus, and in tested length, contact measured inner hole of workpiece wall contains area, measures each position for needing concentricity of workpiece for measurement respectively, determines the jerk value of minimax, obtains workpiece for measurement concentricity.
Description
Technical field
Workpiece being positioned with pneumatic quick-clamping the present invention relates to a kind of, measures the detection of inner hole of workpiece concentricity/concentricity
Equipment, specifically a kind of measurement measurer being exclusively used in coaxiality of inner hole detection.
Background technology
The detection of machinery manufacturing industry shaft hole series part concentricity directly affects the quality and interchangeability of related industries product.
In mechanical processing, axis, hole are the machining elements for processing part, and such case is very universal.The metering of concentricity and concentricity
It is the metering object of such machining element constancy.No matter but due between the two from nominally, or from measurement method all
There are prodigious similarities, so often being mixed up in practical applications.Shaft hole series part has not in actual production
Same structure type, the requirement of concentricity are also had nothing in common with each other in different use occasions.As the actual size of hole or axis deviates
The degree difference of its maximum material size will produce corresponding coaxiality error.Although concentricity and concentricity can evaluate hole
Concentrically or coaxially the case where, but the method for its evaluation is differentiated.Concentricity is to evaluate the axis and datum axis angle in hole
Maximum deviation on direction.Concentricity is that tested element and the benchmark center of circle are projected in a plane, is evaluated between its center of circle partially
Separation from.Due to the evaluation method of concentricity, it is virtually added to an element for influencing concentricity evaluation, is exactly this
" projection plane ".If this projection plane is not vertical with datum hole, it is king-sized that element just will appear error of quality appraisement when projecting
Situation.If the measurable position at tested position is smaller, and the measuring point of benchmark is larger, and this kind of part can be by concentricity
Measurement be converted into the measurement of concentricity.Datum axis can be along its axis direction indefinite extension.Since tested axis is to reference axis
The difference of line possibly is present in all directions in space, therefore its tolerance range is using datum axis as the cylinder of axis.Together
Heart degree is the special shape of concentricity.When element to be measured is the center of circle（Point）, hole or axis on slim workpiece axis when, visual quilt
Survey axis is measured point, they are concentricity to the concentricity of datum axis.Therefore the measurement of concentricity can be projected
To evaluate.The measuring principle of concentricity measures two section circles on benchmark cylinder, uses its line as reference axis.In measured circle
Also two section circles are measured on column, are constructed straight line, are then calculated concentricity.The principal element for influencing concentricity has tested member
The center location and axis direction of element and base element.In national standard, the definition of the concentricity tolerance of axis is that " tolerance range is straight
Diameter is the region in the cylindrical surface of Φ, and the axis and reference axis on the cylindrical surface are coaxial ".According to positioning minimum tolerance area concept,
With containing the practical axis of measured cylinder surface (hole) with the coaxial cylindrical surface of reference axis, in tested length, minimum circumscribed circle
The diameter of cylinder is exactly concentricity of the measured cylinder surface axis to datum axis.Axis is central factor, typically no entity, no
Directly it can embody and measure, can only embody and measure indirectly with surface feature, actual axle line should be theoretically continuous transversal
The line at the minimal condition center of face surface feature is a space curve.It, should also be on the basis of practical axis to datum axis
On take its minimal condition axial line.The concentricity of some associated bores is examined at present, and the simple proof bar of generally use is used for phase
Coaxiality of inner hole is answered to examine.The specific design size of mandrel is public according to workpiece for measurement aperture size and dimensional tolerance, spacing, morpheme
Difference（Concentricity）It is required that etc. determine.Examine the virtual size in a diameter of hole of mandrel test portion, mandrel section surface hard chrome plating, inspection
It tests mandrel and passes through tested part.Mandrel is examined to be welded into single piece by active section and inoperative section, one end is equipped with lifting bolt.Its
In, active section is mandrel, and inoperative section is pipe.Examine mandrel（Sub-assembly）Structure type size, shape, direction and position phase
Together.Examine two mandrel of working portion and the pipe of mandrel to be welded into single piece, be closely combined into proof bar single piece, mandrel and
Pipe is embedded in stepped form, and measured hole all examined qualification with only drift.And when concentricity stick is tighter in hole, it cannot break
The concentricity for determining measured hole is just certain unqualified, because hole at this time is likely to be at the extreme position of drawing requirement, i.e. hole is accomplished
The lower difference of limit deviation.It is true with empirical method since the determination of this inspection mandrel active section outer diameter tolerance range is not stringent
Fixed, this detection method error is larger.The prior art uses three coordinate measuring engine measurement software RationalDMIS concentricities
Measurement method assessment concentricity detection is detected, although measurement result precision is high, actual use three coordinate measuring engine measurement is coaxial
It spends in work, since measurement method is improper, it sometimes appear that measuring result error is big, the phenomenon that poor repeatability, is easy to cause conjunction
Lattice product flase drop is defective work, and it is certified products to make defective work flase drop.The usually acquisition two of three coordinate measuring engine measurement software is cut
Face is justified, and needs to build coordinate system in position that basic circle is projected in end face mountain.Then the multiple sections for being evaluated cylinder are measured.One
If a cylinder only acquires two sections at both ends, the case where cannot reflecting intermediate cross-section so that axis generate it is larger
Deviation.If tested element is distant from base element, error can be by the amplification at multiple.It is a series of to acquire periphery
Point, measurement measurement point distribution is uniformly distributed in length range.At least six point is justified in each section, in actual measurement work
In can not possibly infinitely increase number of cross-sections and points, go to adopt so many point（Although can accomplish）, when using the method, base
Accurate elongated, corresponding error amount also just accordingly reduces.But, this method is also insufficient, is a risk that and reduces
Underproof workpiece is mistaken for qualification by the bigger error of actual capabilities.Software fits the two cylinders.Pass through acquisition one
Then the point of fixed number amount is handled the point of acquisition according to certain calculation formula and evaluation method, generate a benchmark member
Element, for example measured cylinder is one has certain cylindricity error, there is the cylinder of certain direction vector.If acquisition
Points it is very little, it is impossible to very comprehensive reflection is tested the actual characteristic of cylinder, and the benchmark established with this will be in actual feature
Ideal axis has deviation, increases so as to cause the coaxiality error of tested element.When the form error of base element, i.e. cylindricity
When error is larger, it will have a huge impact.On the one hand it since the points of acquisition are limited, if cylindricity error is big, means
Often one point of increase, computer, which calculates the cylinder axis direction vector generated, to generate big deviation with the former, comes again as a result,
The concentricity for being tested element is measured, prodigious deviation will be also generated.Concentricity tolerance size needs are evaluated by system-computed.According to
When the above method measures concentricity, deviation theory value is larger sometimes for measurement result, especially tested element and base element phase
Away from far, be tested end face length it is again shorter when, error can be very big, and repeatability is also bad.
For now, the endoporus detection overwhelming majority is that bushing, drill bushing are placed on vee-block, fixes by hand, passes through tune
Table bar gauge outfit is saved, rotates bushing, drill bushing to detect concentricity.Such detection method error is larger, and clamping is not unstable, firm,
It is grasped entirely with testing staff's experience, detection method falls behind, and efficiency is low.Or it is detected by way of metering, this detection side
Formula is of high cost, and efficiency is low, and occupies high precision apparatus resource significantly, waste resources of production, therefore traditional coaxiality of inner hole detection side
Formula has been difficult to meet the needs of producing now.Another kind is the concentricity that rotary body workpiece is measured with dial bore gage.Due to interior
Diameter dial gauge can only measured hole internal diameter, the concentricity of workpiece cannot be measured, with generally come dial gauge measure workpiece
Concentricity, the workpiece clamp to be measured on the chuck of lathe, or revolving body workpieces will be clipped in lathe, dividing head three-jaw
On.Or workpiece is placed on the special holder for measuring round piece concentricity, the centre bore at the both ends of workpiece is withstood with top,
It is inhaled on the middle supporting plate of lathe with dial gauge, then measures rotary body workpiece with dial bore gage, workpiece is carried out with dial gauge
It measures.The each of workpiece is measured respectively and needs the position of concentricity, and makes mark, is determined the jerk value of minimax, is calculated
The concentricity of workpiece.Since measured hole is very deep, general dial gauge gauge outfit length is inadequate, it is difficult to complete to measure.
Invention content
The purpose of the present invention is being directed to above-mentioned existing shortcoming, provide a kind of easy to operate, clamping is quick, dress
It is firm that folder is stablized, and detection error is smaller, the pneumatic device of the detection coaxiality of inner hole of flexible adjustment.
The technical solution adopted by the present invention to solve the technical problems is a kind of pneumatic device of detection coaxiality of inner hole,
Including：The platform that the column bow-shaped arm of one pedestal with hollow out pedestal and its workbench and the laterally horizontal pedestal is constituted
Formula pneumatic motor, which is characterized in that workbench is equipped with to be pushed by longitudinal handle screw, and lateral dovetail is led along workbench
On the L-shaped cross slide 7 of rail movement, it is equipped with and longitudinal planker 8 that longitudinal handle 9 pushes is connected by lateral riser screw hole, it is longitudinal
Planker 8 is equipped with and is connected to inlet channel 2 downwards, the clamping disk 14 of upward clamping workpiece for measurement 16, and direction is formed on clamping disk 14
Clamping hole central axis, and it is connected to the trisection radial direction venthole 11 of inlet channel 2, it is each equipped in each radial direction venthole 11
Pneumatic spring push rod 12, the 12 leading portion rectangle body of rod of pneumatic spring push rod connect firmly decile circular arc clamping jaw by same section radial hole shaft end
15；Air-flow enters air supply pipe inlet channel 2 by intake interface 3, by 14 bottom disc sealing ring 10 of clamping disk, through clamping disk
The above-mentioned radial venthole 11 of 14 bottoms trisection circumferential direction hole connection, the air-flow for importing radial venthole 11 push pneumatic spring push rod
12 promote to clamping hole axle center, and the decile circular arc clamping jaw 15 for pushing 12 shaft end of pneumatic spring push rod to connect firmly, centering compresses work to be measured
Part 16；The rotating handle 20 assembled by column bow-shaped arm, connection downwards measures rotary shaft 18, and 17 centering of numerical scale is to be measured
16 central axis of workpiece, 17 table bar measurement head of numerical scale fall into 16 endoporus of workpiece for measurement, in tested length, contact measured work
16 inner hole wall of part contains area, measures each position for needing concentricity of workpiece for measurement respectively, determines the jerk value of minimax,
Obtain 16 concentricity of workpiece for measurement.
The present invention has the advantages that compared with the prior art.
1）Easy to operate, clamping is quick.The present invention divides circular arc clamping jaw using gas kind of drive control etc., passes through air inlet switch
It controls air-flow to enter, impacts the synchronization of pneumatic spring push rod, quickly along shaft core position clamping workpiece for measurement, pressed from both sides by trisection circular arc
Pawl clamping parts, simple in structure, handling are easy to maintenance；Using air pressure quick-clamping, instead of traditional clamping workpiece for measurement mode,
Air-flow export is controlled by air escape cock, pneumatic spring push rod quickly retracts aerodynamic slider Quick-return original position, realizes quick zero
Part clamping, it is simple in structure, it is better than scroll chuck, easy to operate, clamping is quick, removal efficiency is high.It is easy to operate, reduce worker
Labor intensity improves work efficiency.
2）Clamping is stablized firm.The present invention divides circular arc clamping jaw according to workpiece for measurement shape, using gas kind of drive control etc.,
Air-flow is controlled by air inlet switch to enter, and impacts the synchronization of pneumatic spring push rod, quickly along shaft core position clamping workpiece for measurement, clamping
It is reliable and stable.Can be according to workpiece for measurement shape and size, replacement etc. divides circular arc clamping jaw specification.
3）Detection error is smaller.Decile circular arc clamping jaw clamping workpiece for measurement is divided equally using trisection, can not only increase and wait for
Workpiece range and specification are surveyed, and eliminates clamping error.Before three deciles of clamping disk are evenly distributed with square hole limitation pneumatic spring push rod
Circular arc clamping jaw rotational freedom in the axial direction is divided in section rectangle body of rod shaft end etc., ensure that the stability of clamping and workpiece for measurement are hung down
Straight directional precision.It realizes high-precision centering, improves measurement accuracy；Decile circular arc clamping jaw uses 3 semicircle cambered surface highests of decile
Point location, being uniformly distributed can synchronize to axis direction clamping and relaxation, and decile circular arc clamping jaw length direction is long, easily ensures work to be measured
The positioning of part vertical direction, that is, axial direction, easily improves vertical direction precision, overcomes the prior art and tests method and determines concentricity and same
Axis degree, efficiency is low, the defect of work step complexity.
4）Flexible adjustment, can laterally, longitudinal high precision fine tuning wait for workpiece for measurement.Workbench of the present invention can laterally, longitudinally
The clamping disk of adjusting movement, use can push lateral, longitudinal planker to do lateral, longitudinal direction along dovetail groove by lateral, longitudinal direction handle
Movement is adjusted, length travel realizes that centering, concentricity testing result can be more accurate.Endoporus is detected by finely tuning accurate centering
Concentricity, laterally also can high precision fine tuning part, transverse and longitudinal displacement trimming precision up to 0.005mm.It can be according to workpiece shapes
The variation of position, centering inner bore of part axis, dovetail positioning method slot use V-type positioning method, dovetail groove that can compensate mill automatically
Damage gap, it is ensured that blind-mate, to ensure workbench flatness very well.Three coordinate measuring machine compared with the prior art
Survey Software RationalDMIS concentricities detect measurement method coordinate system and generate the vertical coordinate plane centering reference axis of axis, adopt
It is convenient and efficient come centering with cylinder axis and 3 d-line with first axle plane vector come centering.
5）It is at low cost.The present invention is using pedestal and the laterally horizontal seat with hollow out pedestal and its workbench
The desk-top pneumatic motor that the column bow-shaped arm of body is constituted, it is simple in structure, utilize three coordinate measuring machine to processing compared with the prior art
Part geometric tolerance detects, direct convenience, and measurement result precision is high, eliminates design and the manufacture institute of conventional method detection apparatus
The time needed and expense, considerably reduce production cost, shorten the production cycle.
Description of the drawings
Fig. 1 is the schematic three dimensional views of the pneumatic device of present invention detection coaxiality of inner hole.
Fig. 2 is the front view of Fig. 1.
Fig. 3 is the right view of Fig. 1.
In figure：1 hollow out pedestal, 2 inlet channels, 3 intake interfaces, 4 deflation interfaces, 5 control switches, 6 dovetail grooves, 7L shapes are horizontal
To planker, 8 longitudinal plankers, 9 longitudinal handles, 10 disk sealing circles, 11 radial ventholes, 12 pneumatic spring push rods, 13 rectangular openings,
14. clamping disk, 15 etc. divide circular arc clamping jaw, and 16 workpieces for measurement, 17 numerical scales, 18 measure rotary shaft, 19 bearings, 20 rotation hands
Handle.
Specific implementation mode
- Fig. 3 refering to fig. 1.In the embodiment described below, a kind of pneumatic device of detection coaxiality of inner hole, including：One
The column bow-shaped arm of a pedestal with hollow out pedestal and its workbench and the laterally horizontal pedestal is constituted desk-top pneumatic
Machine.Workbench is equipped with to be pushed by longitudinal handle screw, and the L-shaped that lateral dovetail guide moves along workbench is laterally dragged
It on plate 7, is equipped with and longitudinal planker 8 that longitudinal handle 9 pushes is connected by lateral riser screw hole, longitudinal planker 8, which is equipped with, to be connected downwards
Logical inlet channel 2, the clamping disk 14 of upward clamping workpiece for measurement 16 are formed with towards clamping hole central axis on clamping disk 14, and
It is connected to the trisection radial direction venthole 11 of inlet channel 2, pneumatic spring push rod 12, gas are each equipped in each radial direction venthole 11
The dynamic 12 leading portion rectangle body of rod of spring push-rod connects firmly decile circular arc clamping jaw 15 by same section radial hole shaft end；Air-flow passes through intake interface
3 enter air supply pipe inlet channel 2, by 14 bottom disc sealing ring 10 of clamping disk, through 14 bottom trisection circumferential direction hole of clamping disk
It is connected to above-mentioned radial venthole 11, the air-flow for importing radial venthole 11 pushes pneumatic spring push rod 12 to be pushed away to clamping hole axle center
Into the decile circular arc clamping jaw 15 for pushing 12 shaft end of pneumatic spring push rod to connect firmly, centering compresses workpiece for measurement 16；Pass through column arch
The rotating handle 20 of arm assembly, downwards connection measure rotary shaft 18, by 17 centering workpiece for measurement of numerical scale, 16 central axis, number
17 table bar measurement head of value scale falls into 16 endoporus of workpiece for measurement, and in tested length, 16 inner hole wall of contact measured workpiece contains area,
The each position for needing concentricity for measuring workpiece for measurement respectively, determines the jerk value of minimax, workpiece for measurement 16 in acquisition
Concentricity.
To wait for that workpiece for measurement 16 is placed in 14 circular hole of clamping disk, by control switch 5 control pneumatic flow pass in and out, open into
Air cock 5, air-flow enter the inlet channel 2 of connection rubber leather hose by intake interface 3, import rectangular opening 13, and rectangular opening 13 is logical
The radially connected 12 back segment polished rod hole of pneumatic spring push rod of 14 center clamping hole of clamping disk is crossed, air-flow imports the uniformly distributed diameter of clamping disk 14 3
To venthole 11, air-flow air pressure pushes pneumatic spring push rod 12 uniformly to be promoted to axle center, pushes 12 shaft end of pneumatic spring push rod etc.
Cyclotomy arc clamping jaw 15,15 fast-holding workpiece for measurement 16 of decile circular arc clamping jaw.Rotating handle 20 passes through column bow-shaped arm pilot hole
In bearing 19 connection measure rotary shaft 18,16 central axis of centering workpiece for measurement.Rotating handle 20 is rotated, rotating handle is passed through
20 adjust 17 measurement head contact measured workpiece of numerical scale, 16 inner hole wall, while adjusting longitudinally, laterally handle 9 and driving L-shaped lateral
Along two direction precise fine-adjustments, centering workpiece for measurement endoporus axle center passes through 17 centering of numerical scale work to be measured for planker 7, longitudinal planker 8
16 endoporus of part is implemented to measure inner bore of part.Multiple cross sections will be measured in 16 element to be measured of workpiece for measurement and reference element
Round central collection gets up, by these centers of circle（Each diameter of a circle can be inconsistent）3D straight lines are configured to, as common axis,
As the benchmark of its concentricity evaluation, benchmark cylinder and tested cylinder are then calculated separately to the concentricity of common axis, takes it
Maximum value is the coaxiality error value of the part.This common axis is similar to a simulation mandrel, therefore this method is close
The practical set process of part.Several circles are measured on the section of element to be measured and reference element, then by the circle of these circles
The heart（A1, a2 ..., an；B1, b2 ..., bn）It connects, constitutes connection axis, calculate its straightness, using maximum real
Body boundary limits the entity of element to be measured.
Above-described is only the preferred embodiment of the present invention.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the principle of the present invention, several modifications and improvements can also be made, these alterations and modifications should be regarded as belonging to
In protection scope of the present invention.
Claims (5)
1. a kind of pneumatic device of detection coaxiality of inner hole, including：One pedestal with hollow out pedestal and its workbench and
The desk-top pneumatic motor that the column bow-shaped arm of the laterally horizontal pedestal is constituted, which is characterized in that workbench is equipped with by vertical
It is pushed to handle screw, on the L-shaped cross slide (7) that lateral dovetail guide moves along workbench, equipped with by laterally standing
Longitudinal planker (8) that the longitudinal handle (9) of plate screw hole connection pushes, longitudinal planker (8) are equipped with connection inlet channel (2) downwards,
The clamping disk (14) of upward clamping workpiece for measurement (16), clamping disk are formed on (14) towards clamping hole central axis, and be connected into
The trisection radial direction venthole (11) in gas channel (2), each radial direction venthole (11) is interior to be each equipped with pneumatic spring push rod (12),
Pneumatic spring push rod (12) the leading portion rectangle body of rod connects firmly decile circular arc clamping jaw (15) by same section radial hole shaft end.
2. the pneumatic device of detection coaxiality of inner hole as described in claim 1, it is characterised in that：Air-flow passes through intake interface
(3) enter air supply pipe inlet channel (2), by clamping disk (14) bottom disc sealing ring (10), through clamping disk (14) bottom three
The above-mentioned radial venthole (11) of decile circumferential direction hole connection, the air-flow for importing radial venthole (11) push pneumatic spring push rod (12)
It is promoted to clamping hole axle center, the decile circular arc clamping jaw (15) for pushing pneumatic spring push rod (12) shaft end to connect firmly, centering compresses to be measured
Workpiece (16).
3. the pneumatic device of detection coaxiality of inner hole as claimed in claim 2, it is characterised in that：It is assembled by column bow-shaped arm
Rotating handle (20), connection downwards measures rotary shaft (18), by numerical scale (17) centering workpiece for measurement (16) central axis,
Numerical scale (17) table bar measurement head falls into workpiece for measurement (16) endoporus, in tested length, contact measured workpiece (16) endoporus
Wall contains area, measures each position for needing concentricity of workpiece for measurement respectively, determines the jerk value of minimax, obtains to be measured
Workpiece (16) concentricity.
4. the pneumatic device of detection coaxiality of inner hole as claimed in claim 3, it is characterised in that：Workpiece for measurement (16) are tested
These centers of circle are configured to 3D straight lines by the central collection that the circle of multiple cross sections is measured in element and reference element, as
Then common axis calculates separately benchmark cylinder and tested cylinder to the same of common axis as the benchmark of its concentricity evaluation
Axis degree, it is the coaxiality error value of the part to take its maximum value.
5. the pneumatic device of detection coaxiality of inner hole as claimed in claim 2, it is characterised in that：It is tested in workpiece for measurement (16)
Several circles are measured on the section of element and reference element, then by the center of circle (a1, a2 ..., an of these circles；B1, b2 ...,
Bn it) connects, constitutes connection axis, calculate its straightness, the entity of element to be measured is limited using the maximum material boundary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810013681.3A CN108489447A (en) | 2018-01-08 | 2018-01-08 | Detect the pneumatic device of coaxiality of inner hole |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810013681.3A CN108489447A (en) | 2018-01-08 | 2018-01-08 | Detect the pneumatic device of coaxiality of inner hole |
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| CN108489447A true CN108489447A (en) | 2018-09-04 |
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| CN201810013681.3A Pending CN108489447A (en) | 2018-01-08 | 2018-01-08 | Detect the pneumatic device of coaxiality of inner hole |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112985344A (en) * | 2021-04-13 | 2021-06-18 | 贵州黎阳国际制造有限公司 | Internal thread coaxiality detection device |
| CN115112083A (en) * | 2022-06-30 | 2022-09-27 | 哈尔滨工业大学 | Coaxiality standard device based axis angular oscillation measuring device and compensation method |
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