CN109443160A - The measuring device and measuring method of casing inner face diameter dimension - Google Patents
The measuring device and measuring method of casing inner face diameter dimension Download PDFInfo
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- CN109443160A CN109443160A CN201811494959.XA CN201811494959A CN109443160A CN 109443160 A CN109443160 A CN 109443160A CN 201811494959 A CN201811494959 A CN 201811494959A CN 109443160 A CN109443160 A CN 109443160A
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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
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- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses a kind of measuring device and measuring method of casing inner face diameter dimension, measuring device include device noumenon, be installed on device noumenon first end for the axial movement along device noumenon be connected to the activity head of casing inner face, be installed on device noumenon second end for abutting the fixed amount head of casing inner face, the measurement table for measuring activity head displacement, the gauge stand for installing measurement table in device noumenon and being installed on gauge stand for connecting the connection structure of activity head and measurement table；The center of circle that device noumenon is placed on casing inner bottom surface and the line of activity head and fixed amount head is made to cross casing inner face, activity head along device noumenon axial movement so that the distance between abutting end face for abutting end face and fixed amount head of activity head is equal to the diameter dimension of casing inner face, activity head is transferred to measurement table along the displacement of the axial movement of device noumenon to measure the displacement of activity head by connection structure.
Description
Technical field
The present invention relates to in-process measurement technical fields, particularly, are related to a kind of measurement dress of casing inner face diameter dimension
It sets, in addition, further relating to a kind of measurement method using above-mentioned measuring device measurement casing inner face diameter dimension.
Background technique
Casing is kernel component on engine, opens up on casing inner bottom surface along casing inner face and leads for installing turbine
The annular groove positioned when to blade, the overall diameter measurement of the annular groove need to guarantee certain precision.Since annular groove is apart from machine
The opening of casket has a certain distance, and the width of annular groove and depth are smaller, and the gauge head of common survey device is difficult to protrude into
The outside trough wall surface of shape slot is measured in annular groove, and the depth dimensions ratio due to annular groove apart from casing outer end face
Larger, the gauge head of general measure mode extends too long, and card base or gauge head are easy to produce flexible deformation under the action of measuring force,
Cause measurement error very big, so that the dimension data for measuring and processing on machining tool and part move to the survey of three coordinates
The value measured on amount machine has obvious deviation.
Summary of the invention
The present invention provides a kind of measuring device and measuring method of casing inner face diameter dimension, to solve existing survey
Measurement error big technical problem when measuring device measurement casing inner face diameter dimension.
According to an aspect of the present invention, a kind of measuring device of casing inner face diameter dimension, including device sheet are provided
Body, activity of the axial movement to be connected on casing inner face being used for along device noumenon for being installed on device noumenon first end
Head, the measurement table for measuring activity head displacement, is set to device noumenon at the fixed amount head for being installed on device noumenon second end
On gauge stand for installing measurement table and be installed on gauge stand for connecting the connection structure of activity head and measurement table；Dress
Set the center of circle that ontology is placed on casing inner bottom surface and makes the line of activity head and fixed amount head to cross casing inner face, activity head
Axial movement along device noumenon is so that the distance between abutting end face and the abutting end face of fixed amount head of activity head are equal to
Activity head is transferred to measurement along the displacement of the axial movement of device noumenon by the diameter dimension of casing inner face, connection structure
Table is to measure the displacement of activity head, to measure the diameter dimension of casing inner face.
Further, the first end of device noumenon is along the mounting groove being axially arranged with for installation activity amount head, activity head
Connect with connection structure and from installation channel opening stretch out with casing inner end face contact, activity head and mounting groove clearance fit with
Limitation activity head circumferentially rotates；Connection structure includes in mounting groove for being arranged activity head and boot activity amount
The guide rod of head axial movement, first end protrude into the lever connecting in device noumenon and with guide rod and for lever to be articulated with table
The measuring head of pivot pin on seat, measurement table is resisted against in the second end of lever.
Further, connection structure further includes the spring connecting in lever second end and with gauge stand, activity head edge
The radial direction of casing is mobile to casing center, to make the second end of lever that spring be driven to stretch or compressed with logical in opposite direction
Activity head in lever first end is resisted against on the inner face of casing by the elastic force for crossing spring, to realize measurement.
Further, the installation site of spring is laid close to the end of lever second end.
Further, measure the rest position of the measuring head of table to pivot pin distance and guide rod rest position to pivot pin away from
From equal.
Further, the abutting end face of activity head and fixed amount head is arc surface, is connected on the inner face of casing
Activity head and fixed amount head have measurement function contact be respectively positioned at the highest point position of arc surface.
Further, the length dimension of device noumenon is less than the diameter dimension of casing inner cavity, the abutting end face of activity head
The distance between abutting end face of fixed amount head is greater than the sum of diameter and the permissible tolerance of maximum of casing inner face.
Further, the end face at device noumenon both ends is arc surface, and the diameter of arc surface is less than casing inner face
Diameter.
According to another aspect of the present invention, a kind of measurement method of casing inner face diameter dimension is also provided, use is above-mentioned
The measuring device of casing inner face diameter dimension, comprising the following steps: measuring device is placed in on table part, determines and measures table
Dead-center position；Fixed amount head is connected to the fixed position of casing inner face, pendulous device ontology is supported to adjust activity head
The position of casing inner face is connected to so that the line between activity head and fixed amount head crosses the center of circle of casing inner face, to make
The diameter for abutting distance between end face and being equal to casing inner face for abutting end face and fixed amount head of activity head；Adjust activity
Head reads the offset with dead-center position that measurement table is shown while be connected to the position of casing inner face, at offset minimum
The as diameter dimension of casing inner face.
Further, to table part include upper surface for placing measuring device and two sides for contact activity head and
The side end face of fixed amount head, the distance between both sides of the face are equal to the diameter dimension of standard casing inner face.
The invention has the following advantages:
The measuring device of casing inner face diameter dimension of the invention, by the way that device noumenon to be placed on casing inner bottom surface simultaneously
The line of activity head and fixed amount head is set to cross the center of circle of casing inner face, therefore activity head moves axially simultaneously along device noumenon
After being connected on casing inner face, the distance between abutting end face for abutting end face and fixed amount head of activity head is equal to casing
The diameter dimension of inner face, then by being installed on gauge stand for connecting the connection structure of activity head and measurement table for activity
The mobile displacement of head is transferred to the measurement table on gauge stand, to measure the displacement that activity head is moved axially along device noumenon
It measures, the distance between the activity end surface and fixed amount end surface of reset condition add the displacement of activity head in device noumenon
Amount is the diameter dimension of casing inner face.
Other than objects, features and advantages described above, there are also other objects, features and advantages by the present invention.
Below with reference to figure, the present invention is described in further detail.
Detailed description of the invention
The attached drawing constituted part of this application is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the schematic cross-sectional view of the measuring device of the casing inner face diameter dimension of the preferred embodiment of the present invention；
Fig. 2 is the structural schematic diagram of the measuring device of the casing inner face diameter dimension of the preferred embodiment of the present invention.
Marginal data:
1, device noumenon；2, activity head；3, fixed amount head；4, gauge stand；41, mounting hole；5, connection structure；51, guide rod；
52, lever；53, pivot pin；54, spring；6, casing.
Specific embodiment
The embodiment of the present invention is described in detail below in conjunction with attached drawing, but the present invention can be limited by following and
The multitude of different ways of covering is implemented.
Fig. 1 is the schematic cross-sectional view of the measuring device of the casing inner face diameter dimension of the preferred embodiment of the present invention；
Fig. 2 is the structural schematic diagram of the measuring device of the casing inner face diameter dimension of the preferred embodiment of the present invention.
As shown in Figure 1, the measuring device of the casing inner face diameter dimension of the present embodiment, including device noumenon 1, it is installed on
Activity head 2, the installation that 6 inner face of casing is connected to for the axial movement along device noumenon 1 of 1 first end of device noumenon
In 1 second end of device noumenon for being connected to the fixed amount head 3 of 6 inner face of casing, for measuring 2 displacement of activity head
It measurement table, the gauge stand 4 for installing measurement table in device noumenon 1 and is installed on gauge stand 4 for connecting activity
First 2 and measurement table connection structure 5；Device noumenon 1 is placed on 6 inner bottom surface of casing and makes the company of activity head 2 Yu fixed amount head 3
Line crosses the center of circle of 6 inner face of casing, activity head 2 along device noumenon 1 axial movement so that activity head 2 abutting end face with
Abutting the distance between end face of fixed amount head 3 is equal to the diameter dimension of 6 inner face of casing, and connection structure 5 is by 2 edge of activity head
The displacement of the axial movement of device noumenon 1 is transferred to measurement table to measure the displacement of activity head 2, to measure casing 6
The diameter dimension of inner face.The measuring device of 6 inner face size of casing of the invention, by the way that device noumenon 1 to be placed in casing 6
On bottom surface and the line of activity head 2 and fixed amount head 3 is made to cross the center of circle of 6 inner face of casing, therefore activity head 2 is along device sheet
Body 1 moves axially and after being connected on 6 inner face of casing, the abutting end face for abutting end face and fixed amount head 3 of activity head 2 it
Between distance be equal to 6 inner face of casing diameter dimension, then by be installed on gauge stand 4 for connect activity head 2 and measurement
The mobile displacement of activity head 2 is transferred to the measurement table on gauge stand 4 by the connection structure 5 of table, to measure 2 edge of activity head
The displacement that device noumenon 1 moves axially, in device noumenon 12 end face of activity head and 3 end face of fixed amount head of reset condition it
Between distance plus activity head 2 displacement be 6 inner face of casing diameter dimension.Since device noumenon 1 is not disposed in machine
When in casket 6, the distance between 2 end face of activity head and 3 end face of fixed amount head are greater than the diameter dimension of 6 inner face of casing, therefore
After device noumenon 1 is placed on casing inner bottom surface activity head 2 by 6 inner face of casing extruding along device noumenon 1 axial movement,
And since the line of activity head 2 and fixed amount head 3 crosses the center of circle, activity head 2 is also the radial direction along 6 inner face of casing
It is mobile to the center of circle.In the present embodiment, using the ring in measuring device measurement casing 6 for being positioned when installing turborotor
The overall diameter of shape slot, annular groove are opened up on 6 inner bottom surface of casing along 6 inner face of casing, the outside trough wall surface and machine of annular groove
6 inner face of casket is coplanar, therefore the diameter for measuring inner face above the trough wall surface of outside is the overall diameter of annular groove.Activity head
2 and fixed amount head 3 without protruding into annular groove, to avoid the impaired deformation of measurement process intermediate annular groove, cause measurement error big.And
And device noumenon 1 is placed on 6 inner bottom surface of casing, 1 position of device noumenon is stablized in measurement process, so that activity head 2 be avoided to exist
Occur shaking when reading and causes measurement inaccuracy.Optionally, device noumenon 1 includes first end, the use for installation activity amount head 2
Second end in installation fixed amount head 3 and telescoping mechanism for connecting first end and second end.It is stretched by telescoping mechanism
Contracting adjusts the distance between activity head 2 and fixed amount head 3 to measure the casing 6 of different size model numbers.In the present embodiment, table
Seat 4 is equipped with the mounting hole 41 for installing universal measurement table.
As shown in Figure 1, the first end of device noumenon 1 is axially arranged with the installation for installation activity amount head 2 along the diameter of casing 6
Slot, activity head 2 connect with the first end of connection structure 5 and stretch out from the opening of mounting groove first end and connect with 6 inner face of casing
Touching, the second end of activity head 2 are connect with connection structure 5, and connection structure 5 includes in mounting groove for being arranged activity
First 2 and the guide rod 51 moved axially of boot activity amount head 2, first end is protruded into device noumenon 1 and is connect with guide rod 51 thick stick
Bar 52 and pivot pin 53 for being articulated with lever 52 on gauge stand 4, the measuring head of measurement table are resisted against the second end of lever 52
On.The distance between activity head 2 Yu fixed amount head 3 of reset condition are greater than the diameter of 6 inner face of casing in device noumenon 1,
Therefore after being placed on 6 inner bottom surface of casing, activity head 2 and guide rod 51 are moved and are driven to 6 lumen centers of casing along mounting groove
The first end for being articulated with the lever 52 on gauge stand 4 is mobile, to make the measuring head for the measurement table being butted in the second end of lever 52
It is mobile, the displacement of activity head 2 is measured by reading measurement table.Optionally, connection structure 5 includes L-type guide rod, L-type guide rod
Horizontal segment protrude into mounting groove and be slidably connected with mounting groove, activity head 2 is sheathed on the end of the horizontal segment of L shape guide rod, L
The vertical section of type guide rod is then stretched out from the guide groove being set in device noumenon 1 and is connected with the measuring head of measurement table on gauge stand 4.
Optionally, the spring 54 for connecting the cell wall of the vertical section of L-type guide rod and guide groove is axially arranged with along device noumenon 1 in guide groove.
Drive L-type guide rod mobile when activity head 2 is axially moveable by the extruding of 6 inner face of casing, to make to be resisted against L-type guide rod
The measurement table of vertical section measures the displacement of activity head 2.
As shown in Figure 1, connection structure 5 further includes the spring 54 connecting in 52 second end of lever and with gauge stand 4, activity
Head 2 is measured along the axial movement of device noumenon 1, to make the second end of lever 52 that spring 54 be driven to stretch or press in opposite direction
Contracting is surveyed so that the activity head 2 in 52 first end of lever is resisted against on the inner face of casing 6 by the elastic force of spring 54 with realizing
Amount.The installation site of spring 54 is laid close to the end of 52 second end of lever, keeps spring 54 constant in 2 displacement of activity head
In the case of, amount of tension is maximum, therefore the elastic force for being resisted against activity head 2 on the inner face of casing 6 of spring 54 is maximum.
To avoid activity head 2 from moving along 6 radial direction of casing to 6 center of casing during reading, cause measurement result less than normal.It surveys
After amount, device noumenon 1 is taken out out of casing 6, since the elastic force effect of spring 54 transports activity head 2 axially outward
It is dynamic to revert to reset condition.
As shown in Figure 1, distance and guide rod 51 rest position to axis of the rest position of the measuring head of measurement table to pivot pin 53
Pin 53 is equidistant.The displacement of activity head 2 is equal with the measurement displacement of measuring head of table.Optionally, table is measured
It is that guide rod 51 is resisted against the first of lever 52 that measuring head, which is resisted against the distance between position and pivot pin 53 of the second end of lever 52,
The position at end and the distance between axial twice, therefore the displacement for measuring table measuring head is equal to 2 displacement of activity head
Twice.According to it is actual measure need to adjust measurement table measuring head be resisted against lever 52 second end position and pivot pin 53 it
Between distance and guide rod 51 be resisted against the position of first end of lever 52 and the distance between axial, need to ensure activity head 2
Maximum displacement be transferred to measurement table measuring head displacement in the measurement range of measurement table.
As shown in Fig. 2, the abutting end face of activity head 2 and fixed amount head 3 is arc surface, and make the highest point of arc surface
It is connected on the inner face of casing 6.The length dimension of device noumenon 1 is less than the diameter dimension of 6 inner face of casing, activity head 2
The distance between abutting end face for abutting end face and fixed amount head 3 be greater than the diameter of 6 inner face of casing and maximum allow public affairs
The sum of difference.
As shown in Fig. 2, the end face at 1 both ends of device noumenon is arc surface, and the diameter of arc surface is less than 6 inner cavity of casing
Diameter.In the present embodiment, when using measuring device measurement inner face size, device noumenon 1 is placed on 6 inner bottom surface of casing
Later, fixed amount head 3 is fixed on to the circuit oscillation device noumenon 1 on 6 inner face of casing and along casing 6, it is ensured that 6 inner end of casing
The center of circle in face is the distance between activity head 2 and fixed amount head 3 on the line between activity head 2 and fixed amount head 3
For the diameter dimension of 6 inner face of casing.By the way that the end face of the first end and second end of device noumenon 1 is set as diameter less than casing
The arc surface of 6 intracavity diameters, to be obstructed when avoiding device ontology 1 being put into casing 6 and along 6 axial wobble of casing.
As shown in Fig. 2, the measurement method of the 6 inner face size of casing of the present embodiment, using above-mentioned 6 inner face size of casing
Measuring device, comprising the following steps: measuring device is placed in on table part, determines the dead-center position of measurement table；Measurement is filled
It is placed in the resting against on face of 6 inner cavity of casing, is butted on activity head 2 and fixed amount head 3 on 6 inner face of casing；By fixed amount
First 3 are connected to the fixed position of 6 inner face of casing, and pendulous device ontology 1 is connected to 6 inner end of casing to adjust activity head 2
The position in face is so that the line between activity head 2 and fixed amount head 3 crosses the center of circle of 6 inner face of casing, to make activity head 2
The diameter for abutting distance between end face and being equal to 6 inner face of casing for abutting end face and fixed amount head 3；Activity head 2 is adjusted to support
The offset with dead-center position that measurement table is shown is read while being connected to the position of 6 inner face of casing, is at offset minimum
For the diameter dimension of 6 inner face of casing.
It include upper surface for placing measuring device and two sides for contacting activity head 2 and fixed amount head to table part
3 side end face, the distance between both sides of the face are equal to the diameter dimension of 6 inner face of standard casing.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of measuring device of casing inner face diameter dimension, which is characterized in that
Including device noumenon (1), be installed on described device ontology (1) first end for along described device ontology (1) axial direction
Movement is to be connected to the activity head (2) of casing (6) inner face, be installed on being used for for described device ontology (1) second end
It is connected to the fixed amount head (3) of casing (6) inner face, the measurement table for measuring activity head (2) displacement, is set to institute
It states the gauge stand (4) for being used to install the measurement table on device noumenon (1) and is installed on the gauge stand (4) for connecting institute
State the connection structure (5) of activity head (2) and the measurement table；
Described device ontology (1) is placed on casing inner bottom surface and makes the line of the activity head (2) Yu the fixed amount head (3)
Cross the center of circle of casing inner face, the activity head (2) along described device ontology (1) axial movement so that the activity head
(2) the distance between the abutting end face of abutting end face and the fixed amount head (3) is equal to the diameter dimension of casing inner face, institute
The displacement for stating axial movement of the connection structure (5) by the activity head (2) along described device ontology (1) is transferred to the survey
Scale is to measure the displacement of the activity head (2), to measure the diameter dimension of the casing (6) inner face.
2. the measuring device of casing inner face diameter dimension according to claim 1, which is characterized in that
The first end of described device ontology (1) is along the mounting groove being axially arranged with for installing the activity head (2), the activity
Amount head (2) connect with the connection structure (5) and from the installation channel opening stretching with casing (6) inner end face contact, it is described
Activity head (2) limits the activity head (2) with the mounting groove clearance fit and circumferentially rotates；
The connection structure (5) includes in the mounting groove for being arranged the activity head (2) and guiding the work
The guide rod (51) of momentum head (2) axial movement, first end, which protrude into, to be connect in described device ontology (1) and with the guide rod (51)
Lever (52) and for the lever (52) to be articulated with the pivot pin (53) on the gauge stand (4), the measurement of the measurement table
Head is resisted against in the second end of the lever (52).
3. the measuring device of casing inner face diameter dimension according to claim 2, which is characterized in that
The connection structure (5) further includes the spring connecting in the lever (52) second end and with the gauge stand (4)
(54),
The activity head (2) along described device ontology (1) axial movement, so that the second end of the lever (52) be made to drive
The spring (54) stretches in opposite direction or compresses to pass through the elastic force of the spring (54) for the lever (52) first
The activity head (2) on end is resisted against on the inner face of the casing (6), to realize measurement.
4. the measuring device of casing inner face diameter dimension according to claim 3, which is characterized in that
The installation site of the spring (54) is laid close to the end of the lever (52) second end.
5. the measuring device of casing inner face diameter dimension according to claim 2, which is characterized in that
It is described measurement table measuring head rest position to the pivot pin (53) distance and the guide rod (51) rest position extremely
Pivot pin (53) are equidistant.
6. the measuring device of casing inner face diameter dimension according to claim 1, which is characterized in that
The abutting end face of the activity head (2) and the fixed amount head (3) is arc surface, is connected to the casing (6)
The contact with measurement function of the activity head (2) and the fixed amount head (3) on inner face is respectively positioned on arc surface
At the position of highest point.
7. the measuring device of casing inner face diameter dimension according to claim 1, which is characterized in that
The length dimension of described device ontology (1) is less than the diameter dimension of casing (6) inner face,
The distance between the abutting end face of the activity head (2) and the abutting end face of the fixed amount head (3) are greater than casing (6)
The sum of the diameter of inner face and maximum permissible tolerance.
8. the measuring device of casing inner face diameter dimension according to claim 1, which is characterized in that
The end face at described device ontology (1) both ends is arc surface, and the diameter of arc surface is less than the diameter of casing (6) inner cavity.
9. a kind of measurement method of casing inner face diameter dimension, which is characterized in that using any machine of claim 1-8
The measuring device of casket (6) inner face size, comprising the following steps:
Measuring device is placed in on table part, determines the dead-center position of measurement table；
Measuring device is placed in the resting against on face of casing (6) inner cavity, activity head (2) and fixed amount head (3) is made to be butted on casing
(6) on inner face；
Fixed amount head (3) is connected to the fixed position of casing inner face, pendulous device ontology (1) is to adjust activity head
(2) position of casing (6) inner face is connected to so that the line between activity head (2) and fixed amount head (3) crosses casing inner end
The center of circle in face, so that distance between the abutting end face of activity head (2) and the abutting end face of fixed amount head (3) be made to be equal in casing
The diameter of end face；
It adjusts and reads measurement table is shown and dead-center position while activity head (2) are connected to the position of casing (6) inner face
Offset, be the diameter dimension of casing (6) inner face at offset minimum.
10. the measurement method of casing inner face diameter dimension according to claim 1, which is characterized in that
It include upper surface for placing measuring device and two sides for contacting activity head (2) and fixed amount head to table part
(3) side end face, the distance between both sides of the face are equal to the diameter dimension of standard casing (6) inner face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811494959.XA CN109443160B (en) | 2018-12-07 | 2018-12-07 | Device and method for measuring outer diameter of annular groove in casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811494959.XA CN109443160B (en) | 2018-12-07 | 2018-12-07 | Device and method for measuring outer diameter of annular groove in casing |
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| CN109443160A true CN109443160A (en) | 2019-03-08 |
| CN109443160B CN109443160B (en) | 2021-06-25 |
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| CN201811494959.XA Active CN109443160B (en) | 2018-12-07 | 2018-12-07 | Device and method for measuring outer diameter of annular groove in casing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112304228A (en) * | 2020-11-16 | 2021-02-02 | 中国航发沈阳黎明航空发动机有限责任公司 | Length measuring device applying grating technology |
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