CN106352771B - A kind of oval inner diameter measuring device - Google Patents
A kind of oval inner diameter measuring device Download PDFInfo
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- CN106352771B CN106352771B CN201610855779.4A CN201610855779A CN106352771B CN 106352771 B CN106352771 B CN 106352771B CN 201610855779 A CN201610855779 A CN 201610855779A CN 106352771 B CN106352771 B CN 106352771B
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- cylinder
- cylindrical section
- measuring device
- rotary table
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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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- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
A kind of oval inner diameter measuring device, is related to a kind of measuring tool.Whether the present invention solves the problems, such as to be unable to measure diameter at oval front end closing in existing irregularly-shaped inner hole pipe part qualified.Measuring rod includes sequentially coaxially affixed rotary table section, first to third cylindrical section and first handle, the measuring cylinder includes sequentially coaxially affixed first to fourth cylindrical section and second handle, measuring rod is installed in measuring cylinder, two claws are symmetrically installed in through hole, and one end for being oppositely arranged of two claws with the outer circle face contact of rotary table section, one end of spring leaf is located in blind hole, the other end is affixed by the first screw and the second cylinder section, positioning sleeve is in close contact by an end face of location nut and the 3rd cylinder section, visual windows are offered on the side wall of second handle, the edge of visual windows is provided with the first groove and the second groove along the radial direction of second handle, third groove is provided on third cylindrical section.The present invention is used for the measurement of internal diameter.
Description
Technical field
The present invention relates to a kind of measuring tools, and in particular to a kind of oval inner diameter measuring device.
Background technique
One end is straight hole in mechanical industry, and the other end is that the application (as shown in Figure 3) of oval irregularly-shaped inner hole pipe part is wide
It is general.Such part is tighter to diameter dimension requirement at oval front end closing in, due to oval for closing-in structure, the general amount of the diameter
Tool is unable to measure.It now needs to design a kind of dedicated oval inner diameter measuring device, can directly determine that part is oval by measurement
It is whether qualified that diameter is processed at closing in.
Summary of the invention
The present invention is to solve to be unable to measure diameter at oval front end closing in existing irregularly-shaped inner hole pipe part and be
The problem of no qualification, and then provide a kind of oval inner diameter measuring device.
Used technical solution is the present invention to solve above-mentioned technical problem:
A kind of oval inner diameter measuring device, including measuring rod, measuring cylinder, positioning sleeve, location nut, spring leaf and a pair of of card
Pawl, the measuring rod include sequentially coaxially affixed rotary table section, first to third cylindrical section and first handle, the big end of rotary table section
Affixed with one end of the first cylindrical section, the measuring cylinder includes sequentially coaxially affixed first to fourth cylindrical section and second-hand
Handle, measuring rod are installed in measuring cylinder, and the radial direction of the first cylinder section offers through hole, and two claws are symmetrically installed on and pass through
In through-hole, and one end for being oppositely arranged of two claws opens up on the side wall of each claw with the outer circle face contact of rotary table section
There are radial blind holes, one end of spring leaf is located in blind hole, and the other end is affixed by the first screw and the second cylinder section, positioning sleeve set
It is in close contact in the 4th cylinder section, and through an end face of location nut and the 3rd cylinder section, on the side wall of second handle
Visual windows are offered, the edge of visual windows is provided with the first groove and the second groove along the radial direction of second handle, the
The position that three cylindrical sections are located at second handle visual windows is provided with third groove.
The central axis of through hole is to a distance between end face of the 3rd cylinder section and measured bore in the first cylinder section
It is identical to the distance between end face at tested part straight hole at diameter.
The periphery of the 3rd cylinder section and the inner headed face clearance fit of tested part, the 3rd cylinder Duan Shangqi is along central axis
Symmetrical a part of periphery is processed as plane.
The second cylinder of the diameter of second cylindrical section less than the first cylindrical section and third cylindrical section, outside the second cylindrical section
The second screw, the outer circle face contact of one end of the second screw and the second cylindrical section are provided in section.
Each claw includes the 4th cylindrical section and the conical section for being fixed in the 4th cylindrical section one end, the 4th cylindrical section it is another
Angle between end face and rotary table section central axis, the angle between the bus of rotary table section and rotary table section central axis are equal.
Angle between the other end and rotary table section central axis of 4th cylindrical section is 5 °, and the taper of conical section is
120°。
A kind of oval inner diameter measuring device further includes third screw, and location nut is threadedly coupled with the 4th cylinder section, third
Screw is threadedly coupled along location nut radial direction with location nut, and one end of third screw closely connects with the 4th cylinder section
Touching.
The central axis of the through hole intersects with the central axis of the first cylinder section.
The present invention has the effect that compared with prior art
First groove is measured diameter theoretical minimum value, and the second groove is measured diameter theoretical maximum, when third groove
When among the first groove and the second groove, indicate that diameter is in qualified model at the oval front end closing in of irregularly-shaped inner hole pipe part
In enclosing, oval inner diameter measuring device of the invention using simple, measurement efficiency is high, saving low to reviewer's skill requirement at
This, is suitable for large-scale promotion and application.
Detailed description of the invention
Fig. 1 is the schematic front view (partial cutaway) of oval inner diameter measuring device；
Fig. 2 is the schematic top plan view of Fig. 1；
Fig. 3 is measurement part schematic diagram (section view) of the invention；
Fig. 4 is the main cross-sectional schematic diagram of measuring cylinder；
Fig. 5 is the schematic top plan view of Fig. 4；
Fig. 6 is the main cross-sectional schematic diagram of positioning sleeve；
Fig. 7 is the left view schematic diagram of Fig. 6；
Fig. 8 is the main cross-sectional schematic diagram of location nut；
Fig. 9 is the schematic front view of spring leaf；
Figure 10 is the schematic top plan view of Fig. 9；
Figure 11 is the partial enlarged view at visual windows.
Specific embodiment
Specific embodiment 1: illustrating present embodiment in conjunction with FIG. 1 to FIG. 8, a kind of oval internal diameter of present embodiment is surveyed
Device is measured, including measuring rod 1, measuring cylinder 2, positioning sleeve 3, location nut 4, spring leaf 5 and a pair of of claw 6, the measuring rod 1 wrap
Include sequentially coaxially affixed rotary table section 1-1, first to third cylindrical section and first handle 1-5, the big end and first of rotary table section 1-1
One end of cylindrical section 1-2 is affixed, and the measuring cylinder 2 includes sequentially coaxially affixed first to fourth cylindrical section and second handle 2-
5, measuring rod 1 is installed in measuring cylinder 2, and the radial direction of the first cylinder section 2-1 offers through hole 2-6, and two claws 6 are symmetrical
It is installed in through hole 2-6, and outer circle face contact of the one end that is oppositely arranged of two claws 6 with rotary table section 1-1, each claw
Radial blind holes 2-7 is offered on 6 side wall, one end of spring leaf 5 is located in blind hole 2-7, the other end by the first screw 7 with
The second cylinder section 2-2 is affixed, and positioning sleeve 3 is sleeved on the 4th cylinder section 2-4, and passes through location nut 4 and the 3rd cylinder section 2-3
An end face be in close contact, offer visual windows 2-8 on the side wall of second handle 2-5, the edge of visual windows 2-8 is along second
The radial direction of handle 2-5 is provided with the first groove 2-5-1 and the second groove 2-5-2, and third cylindrical section 1-4 is located at second handle
The position of 2-5 visual windows 2-8 is provided with third groove 1-4-1.
It is clearance fit between measuring rod 1 and measuring cylinder 2, a pair of of claw 6 can according to need, and utilize pushing away for measuring rod 1
Movement is freely moved with the radial direction along measuring rod 1, makes it when being moved radially using 5 stationary jaw 6 of spring leaf
Without departing from the periphery of rotary table section 1-1.
The position of first groove 2-5-1 is the position where measured diameter theoretical minimum value, the position of the second groove 2-5-2
For the position where measured diameter theoretical maximum, third groove 1-4-1 is located at the first groove 2-5-1 and the second groove when measurement
It is represented between 2-5-2 and is tested oval internal diameter and meets the requirements, tested part 100 is qualified product.
The quantity of first screw 7 is unlimited, can also be able to be multiple, the central axis of through hole 2-6 and the first spiral shell for one
The central axis of nail 7 is in the same plane.
Spring leaf 5 includes the first plate and the second plate being parallel to each other, and flat for the first plate of connection and second
The inclined plate of plate.First screw 7 can be M4 slotted screw, and the second screw can slot holding screw for M5, and third screw can be with
For M6 fluting holding screw.
First to third groove 1-4-1 line width and depth is 0.1mm.
Specific embodiment 2: illustrate present embodiment in conjunction with FIG. 1 to FIG. 5, through hole 2-6 on the first cylinder section 2-1
Central axis is straight to tested part 100 with 100-1 at measured bore diameter to a distance between end face of the 3rd cylinder section 2-3
The distance between the end face Kong Chu 100-2 is identical.It is designed in this way, it can be quick when to diameter measurement is carried out at oval front end closing in
The position of centering measurement make to position plate washer and tested zero as long as the measuring device assembled is penetrated into tested part 100
End face 100-2 is in close contact at 100 straight hole of part, the quilt that the position that claw 6 is contacted with tested part 100 at this time measures needed for being
Diameter of bore is surveyed, it is quick and convenient to the measurement of tested part 100.Other compositions and connection relationship and one phase of specific embodiment
Together.
Specific embodiment 3: embodiment is described with reference to Fig. 3, the periphery and tested part of the 3rd cylinder section 2-3
100 inner headed face clearance fit, on the 3rd cylinder section 2-3 its along central axis, symmetrically a part of periphery is processed as plane.
It is designed in this way, reduces the friction between the 3rd cylinder section 2-3 and tested part 100.Other compositions are real with connection relationship and specifically
It is identical to apply mode one or two.
Specific embodiment 4: illustrating present embodiment in conjunction with Fig. 1 and Fig. 3, the diameter of the second cylindrical section 1-3 is less than first
Cylindrical section 1-2 and third cylindrical section 1-4 is provided with the second screw 9 on the second cylinder section 2-2 outside the second cylindrical section 1-3,
The outer circle face contact of one end of the second screw 9 and the second cylindrical section 1-3.It is designed in this way, the first cylindrical section 1-2 and third cylindrical section
1-4 and measuring cylinder 2 are clearance fit, and the required precision of mating surface is higher, and the 4th cylindrical section 6-1 is not direct with measuring cylinder 2
Contact moves radially range, the central axis of the second screw 9 in measuring cylinder 2 to measuring rod 1 by the realization of the second screw 9
It is in the same plane with the central axis of through hole 2-6 and the first screw 7.Other compositions and connection relationship and specific embodiment party
Formula three is identical.
Specific embodiment 5: illustrating present embodiment in conjunction with Fig. 1 and Fig. 3, each claw 6 includes the 4th cylindrical section 6-1
And it is fixed in the conical section 6-2 of the 4th one end cylindrical section 6-1, the other end of the 4th cylindrical section 6-1 and rotary table section 1-1 central axis
Angle between line, the angle between the bus of rotary table section 1-1 and rotary table section 1-1 central axis are equal.It is designed in this way, right
When measuring device carries out tested theoretical maximum groove and tested theoretical minimum value groove, the position of adjustment claw 6 be free to
Set and keep simultaneously the close contact between claw 6 and rotary table section 1-1.Other compositions and connection relationship and specific embodiment
One, two or four is identical.
Specific embodiment 6: illustrating present embodiment, the other end of the 4th cylindrical section 6-1 and circle in conjunction with Fig. 1 and Fig. 3
Angle between platform section 1-1 central axis is 5 °, and the taper of conical section 6-2 is 120 °.Other compositions are with connection relationship and specifically
Embodiment five is identical.
Specific embodiment 7: illustrate present embodiment in conjunction with FIG. 1 to FIG. 3, a kind of oval inner diameter measuring device further includes
Third screw 10, location nut 4 are threadedly coupled with the 4th cylinder section 2-4, and third screw 10 is along 4 radial direction of location nut and determines
Position nut 4 is threadedly coupled, and one end of third screw 10 and the 4th cylinder section 2-4 are in close contact.It is designed in this way, passes through third spiral shell
Nail 10 realizes further fixing to positioning sleeve 3, guarantees the accuracy of measurement, third screw 10 and through hole 2-6, the first screw
7 and second the central axis of screw 9 be in the same plane.Other compositions and connection relationship and specific embodiment one, two, four
Or six is identical.
Specific embodiment 8: illustrating present embodiment, the central axis of the through hole 2-6 in conjunction with Fig. 1, Fig. 3~Fig. 5
Intersect with the central axis of the first cylinder section 2-1.Other compositions are identical as specific embodiment seven as connection relationship.
Working principle:
First measuring rod 1 is installed in measuring cylinder 2, a pair of of claw 6 is respectively charged into the through hole 2- of the two sides rotary table section 1-1
In 6, and it is fixed by spring leaf 5, outside micrometer is then transferred to measured diameter theoretical minimum value position, traverse measurement bar 1
Make it that claw 6 be pushed to move radially, when the cone point of two claws 6 holds out against two measuring surface of outside micrometer, in measuring cylinder 2
Upper to draw the first groove 2-5-1, then third groove 1-4-1 is drawn in position concordant with the first groove 2-5-1 on measuring rod 1, will
Outside micrometer is transferred to the position of measured diameter theoretical maximum, and the second groove 2-5- is drawn in measuring cylinder 2 with same method
2。
When measurement, oval inner diameter measuring device is installed in 100 inner hole of tested part, positioning sleeve 3 is close to tested zero
End face 100-2 and fixed by location nut 4 at 100 straight hole of part, the at this time center of the through hole 2-6 on the first cylinder section 2-1
Axis and measured bore intersection are the position of tested bore dia, push measuring rod 1, move claw 6 along 1 radial direction of measuring rod
It is dynamic, when two 6 conical surface vertex of claw are withstood at measured bore, the position of the third groove 1-4-1 on bar 1 is observed and measured,
It is qualification between the first groove 2-5-1 and the second groove 2-5-2 in measuring cylinder 2.
Claims (8)
1. a kind of oval inner diameter measuring device, it is characterised in that: including measuring rod (1), measuring cylinder (2), positioning sleeve (3), positioning
Nut (4), spring leaf (5) and a pair of of claw (6), the measuring rod (1) include sequentially coaxially affixed rotary table section (1-1), the
One to third cylindrical section and first handle (1-5), and the big end of rotary table section (1-1) and one end of the first cylindrical section (1-2) are affixed, institute
Stating measuring cylinder (2) includes sequentially coaxially affixed first to fourth cylindrical section and second handle (2-5), and measuring rod (1) is installed on
In measuring cylinder (2), the radial direction of the first cylinder section (2-1) is offered through hole (2-6), and two claws (6) are symmetrically installed on
In through hole (2-6), and outer circle face contact of the one end that is oppositely arranged of two claws (6) with rotary table section (1-1), each claw
(6) it is offered on side wall radial blind holes (2-7), one end of spring leaf (5) is located in blind hole (2-7), and the other end passes through the
One screw (7) and the second cylinder section (2-2) are affixed, and positioning sleeve (3) is sleeved on the 4th cylinder section (2-4), and pass through positioning spiral shell
Female (4) and an end face of the 3rd cylinder section (2-3) are in close contact, and offer visual windows (2- on the side wall of second handle (2-5)
8), the edge of visual windows (2-8) is provided with the first groove (2-5-1) and the second quarter along the radial direction of second handle (2-5)
Line (2-5-2), the position that third cylindrical section (1-4) is located at second handle (2-5) visual windows (2-8) are provided with third groove
(1-4-1)。
2. a kind of oval inner diameter measuring device according to claim 1, it is characterised in that: passed through in the first cylinder section (2-1)
The central axis of through-hole (2-6) is to a distance between end face of the 3rd cylinder section (2-3) and (100-1) at measured bore diameter
It is identical to the distance between end face (100-2) at tested part (100) straight hole.
3. a kind of oval inner diameter measuring device according to claim 1 or 2, it is characterised in that: the 3rd cylinder section (2-3)
The inner headed face clearance fit of periphery and tested part (100), it is symmetrical one along central axis in the 3rd cylinder section (2-3)
Exceptionally disc is processed as plane.
4. a kind of oval inner diameter measuring device according to claim 3, it is characterised in that: the second cylindrical section (1-3) it is straight
Diameter is located at the second cylinder section (2-2) of the second cylindrical section (1-3) outside less than the first cylindrical section (1-2) and third cylindrical section (1-4)
On be provided with the second screw (9), the outer circle face contact of one end of the second screw (9) and the second cylindrical section (1-3).
5. a kind of oval inner diameter measuring device according to claim 1,2 or 4, it is characterised in that: each claw (6) includes
4th cylindrical section (6-1) and the conical section (6-2) for being fixed in the 4th one end cylindrical section (6-1), the 4th cylindrical section (6-1) it is another
Angle between end face and rotary table section (1-1) central axis, bus and rotary table section (1-1) central axis with rotary table section (1-1)
Between angle it is equal.
6. a kind of oval inner diameter measuring device according to claim 5, it is characterised in that: the 4th cylindrical section (6-1) it is another
Angle between one end face and rotary table section (1-1) central axis is 5 °, and the taper of conical section (6-2) is 120 °.
7. a kind of according to claim 1, oval inner diameter measuring device described in 2,4 or 6, it is characterised in that: a kind of oval internal diameter
Measuring device further includes third screw (10), and location nut (4) is threadedly coupled with the 4th cylinder section (2-4), third screw (10)
It is threadedly coupled along location nut (4) radial direction with location nut (4), and one end of third screw (10) and the 4th cylinder section
(2-4) is in close contact.
8. a kind of oval inner diameter measuring device according to claim 7, it is characterised in that: in the through hole (2-6)
Mandrel line intersects with the central axis of the first cylinder section (2-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610855779.4A CN106352771B (en) | 2016-09-28 | 2016-09-28 | A kind of oval inner diameter measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610855779.4A CN106352771B (en) | 2016-09-28 | 2016-09-28 | A kind of oval inner diameter measuring device |
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| Publication Number | Publication Date |
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| CN106352771A CN106352771A (en) | 2017-01-25 |
| CN106352771B true CN106352771B (en) | 2019-03-08 |
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| CN201610855779.4A Active CN106352771B (en) | 2016-09-28 | 2016-09-28 | A kind of oval inner diameter measuring device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108759605B (en) * | 2018-05-16 | 2023-06-13 | 中车眉山车辆有限公司 | Device and method for finding geometric centers of oblong holes and elliptical holes |
| CN109813201A (en) * | 2019-01-28 | 2019-05-28 | 苏州群圣欣机械设备有限公司 | It is a kind of for detecting the detection device of part internal diameter |
| CN110906894B (en) * | 2020-02-05 | 2020-05-08 | 南京泰普森自动化设备有限公司 | Detection device for pore structure |
| CN112161549B (en) * | 2020-09-24 | 2022-06-21 | 上海市浦东新区建设(集团)有限公司 | Bar planting hole size measuring instrument |
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| CN101898320A (en) * | 2010-01-04 | 2010-12-01 | 沈机集团昆明机床股份有限公司 | Precision measurement of tapered bore of machine tool spindle |
| JP2014035237A (en) * | 2012-08-08 | 2014-02-24 | Marukiya Seisakusho:Kk | Diameter measuring apparatus for tapered hole ends |
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| CN106352771A (en) | 2017-01-25 |
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