CN109443160B - Device and method for measuring outer diameter of annular groove in casing - Google Patents
Device and method for measuring outer diameter of annular groove in casing Download PDFInfo
- Publication number
- CN109443160B CN109443160B CN201811494959.XA CN201811494959A CN109443160B CN 109443160 B CN109443160 B CN 109443160B CN 201811494959 A CN201811494959 A CN 201811494959A CN 109443160 B CN109443160 B CN 109443160B
- Authority
- CN
- China
- Prior art keywords
- casing
- measuring
- movable
- head
- measuring head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
Abstract
The invention discloses a device and a method for measuring the outer diameter of an annular groove in a casing, wherein the measuring device comprises a device body, a movable gauge head, a fixed gauge head, a measuring meter, a gauge stand and a connecting structure, the movable gauge head is arranged at the first end of the device body and used for moving along the axial direction of the device body to abut against the inner end face of the casing, the fixed gauge head is arranged at the second end of the device body and used for abutting against the inner end face of the casing, the measuring meter is used for measuring the displacement of the movable gauge head, the gauge stand is arranged on the device body and used for mounting the measuring meter, and the connecting structure is arranged on the; the device body is arranged on the inner bottom surface of the casing, the connecting line of the movable measuring head and the fixed measuring head passes through the circle center of the inner end surface of the casing, the movable measuring head moves along the axial direction of the device body so that the distance between the abutting end surface of the movable measuring head and the abutting end surface of the fixed measuring head is equal to the diameter size of the inner end surface of the casing, and the connecting structure transmits the displacement of the movable measuring head moving along the axial direction of the device body to the measuring meter so as to measure the displacement of the movable measuring head.
Description
Technical Field
The invention relates to the technical field of machining and measurement, in particular to a device for measuring the outer diameter of an annular groove in a casing, and further relates to a method for measuring the outer diameter of the annular groove in the casing by adopting the device.
Background
The casing is a core part on the engine, an annular groove for positioning when the turbine guide blade is installed is formed in the inner bottom surface of the casing along the inner end surface of the casing, and the outer diameter measurement of the annular groove needs to ensure certain precision. Because the annular groove has a certain distance from the opening of the casing, and the width and the depth of the annular groove are both small, a measuring head of a common measuring device is difficult to extend into the annular groove to measure the outer side groove wall surface of the outer groove, and because the depth of the annular groove from the outer end surface of the casing is large, the measuring head of a conventional measuring mode extends too long, a clamping foot or the measuring head is easy to generate elastic deformation under the action of measuring force, so that the measuring error is large, and the size data and the value of the part which are measured and processed on a processing machine tool are obviously deviated when the part is moved to a three-coordinate measuring machine to be measured.
Disclosure of Invention
The invention provides a device and a method for measuring the outer diameter of an annular groove in a casing, which aim to solve the technical problem of large measurement error when the diameter of the inner end face of the casing is measured by the conventional measuring device.
According to one aspect of the invention, the device for measuring the outer diameter of the annular groove in the casing comprises a device body, a movable gauge head, a fixed gauge head, a measuring meter, a meter base and a connecting structure, wherein the movable gauge head is arranged at a first end of the device body and used for moving along the axial direction of the device body to abut against the inner end face of the casing; the device body is arranged on the inner bottom surface of the casing, the connecting line of the movable measuring head and the fixed measuring head passes through the center of a circle of the inner end surface of the casing, the movable measuring head moves along the axial direction of the device body so that the distance between the abutting end surface of the movable measuring head and the abutting end surface of the fixed measuring head is equal to the diameter size of the inner end surface of the casing, and the connecting structure transmits the displacement of the movable measuring head moving along the axial direction of the device body to the measuring meter so as to measure the displacement of the movable measuring head, so that the diameter size of the inner end surface of the casing is measured.
Furthermore, a mounting groove for mounting the movable gauge head is axially arranged at the first end of the device body, the movable gauge head is connected with the connecting structure and extends out of the opening of the mounting groove to be in contact with the inner end face of the casing, and the movable gauge head is in clearance fit with the mounting groove to limit the movable gauge head to rotate along the circumferential direction; the connecting structure comprises a guide rod, a lever and a shaft pin, wherein the guide rod is arranged in the mounting groove and used for sleeving the movable measuring head and guiding the movable measuring head to move axially, the first end of the lever extends into the device body and is connected with the guide rod, the shaft pin is used for hinging the lever on the gauge stand, and the measuring head of the measuring gauge is abutted against the second end of the lever.
Furthermore, the connecting structure also comprises a spring which is arranged on the second end of the lever and is connected with the gauge stand, and the movable gauge head moves to the center of the casing along the radial direction of the casing, so that the second end of the lever drives the spring to stretch or compress along the opposite direction to enable the movable gauge head on the first end of the lever to be abutted against the inner end face of the casing through the elasticity of the spring, and measurement is realized.
Further, the mounting position of the spring is arranged close to the end of the second end of the lever.
Further, the distance from the abutting position of the measuring head of the measuring meter to the shaft pin is equal to the distance from the abutting position of the guide rod to the shaft pin.
Furthermore, the abutting end surfaces of the movable gauge head and the fixed gauge head are both arc surfaces, and the contacts with the measuring function of the movable gauge head and the fixed gauge head which abut against the inner end surface of the casing are both located at the highest point of the arc surfaces.
Further, the length dimension of the device body is smaller than the diameter dimension of the inner cavity of the casing, and the distance between the abutting end face of the movable gauge head and the abutting end face of the fixed gauge head is larger than the sum of the diameter of the inner end face of the casing and the maximum allowable tolerance.
Furthermore, the end surfaces of the two ends of the device body are both arc surfaces, and the diameter of each arc surface is smaller than that of the inner end surface of the casing.
According to another aspect of the present invention, there is provided a method for measuring an outer diameter of an annular groove in a casing, using the apparatus for measuring an outer diameter of an annular groove in a casing, comprising the steps of: placing a measuring device on a meter aligning piece, and determining the zero position of a measuring meter; the fixed measuring head is abutted to the fixed position of the inner end face of the casing, the device body is swung to adjust the position of the movable measuring head abutted to the inner end face of the casing so that a connecting line between the movable measuring head and the fixed measuring head passes through the circle center of the inner end face of the casing, and therefore the distance between the abutting end face of the movable measuring head and the abutting end face of the fixed measuring head is equal to the diameter of the inner end face of the casing; and adjusting the position of the movable gauge head which is abutted against the inner end face of the casing, and simultaneously reading the offset from the zero point position displayed by the measuring meter, wherein the minimum offset is the diameter size of the inner end face of the casing.
Further, the pair of parts comprises an upper end surface for placing the measuring device and side end surfaces of two sides for contacting the movable measuring head and the fixed measuring head, and the distance between the two side end surfaces is equal to the diameter size of the inner end surface of the standard casing.
The invention has the following beneficial effects:
the device comprises a device body, a movable gauge head, a fixed gauge head, a meter seat, a connecting structure and a measuring table, wherein the device body is arranged on the inner bottom surface of the case, a connecting line of the movable gauge head and the fixed gauge head passes through the center of a circle of an inner end surface of the case, so that after the movable gauge head moves along the axial direction of the device body and is abutted against the inner end surface of the case, the distance between an abutting end surface of the movable gauge head and an abutting end surface of the fixed gauge head is equal to the diameter size of the inner end surface of the case, the moving displacement of the movable gauge head is transmitted to the measuring table on the meter seat through the connecting structure which is arranged on the meter seat and is used for connecting the movable gauge head and the measuring table, the moving displacement of the movable gauge head along the axial direction of the device body is measured, and the distance between the end surface of the movable gauge.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic cross-sectional view of a device for measuring the outer diameter of an annular groove in a casing according to a preferred embodiment of the present invention;
fig. 2 is a schematic structural view of a device for measuring the outer diameter of an annular groove in a casing according to a preferred embodiment of the present invention.
Illustration of the drawings:
1. a device body; 2. a movable measuring head; 3. fixing the measuring head; 4. a gauge stand; 41. mounting holes; 5. a connecting structure; 51. a guide bar; 52. a lever; 53. a shaft pin; 54. a spring; 6. a casing.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the accompanying drawings, but the invention can be embodied in many different forms, which are defined and covered by the following description.
FIG. 1 is a schematic cross-sectional view of a device for measuring the outer diameter of an annular groove in a casing according to a preferred embodiment of the present invention; fig. 2 is a schematic structural view of a device for measuring the outer diameter of an annular groove in a casing according to a preferred embodiment of the present invention.
As shown in fig. 1, the device for measuring the outer diameter of the annular groove in the casing of the present embodiment includes a device body 1, a movable gauge head 2 mounted at a first end of the device body 1 and used for moving along the axial direction of the device body 1 to abut against the inner end surface of the casing 6, a fixed gauge head 3 mounted at a second end of the device body 1 and used for abutting against the inner end surface of the casing 6, a gauge for measuring the displacement of the movable gauge head 2, a gauge stand 4 arranged on the device body 1 and used for mounting the gauge, and a connecting structure 5 mounted on the gauge stand 4 and used for connecting the movable gauge head 2 and the gauge; the device body 1 is arranged on the inner bottom surface of the casing 6, a connecting line of the movable measuring head 2 and the fixed measuring head 3 passes through the center of a circle of the inner end surface of the casing 6, the movable measuring head 2 moves along the axial direction of the device body 1 so that the distance between the abutting end surface of the movable measuring head 2 and the abutting end surface of the fixed measuring head 3 is equal to the diameter size of the inner end surface of the casing 6, and the connecting structure 5 transmits the displacement of the movable measuring head 2 moving along the axial direction of the device body 1 to a measuring meter to measure the displacement of the movable measuring head 2, so that the diameter size of the inner end surface of the casing 6 is measured. The measuring device of the size of the inner end surface of the casing 6 of the invention is characterized in that the device body 1 is arranged on the inner bottom surface of the casing 6, the connecting line of the movable measuring head 2 and the fixed measuring head 3 passes through the circle center of the inner end surface of the casing 6, therefore, after the movable gauge head 2 moves along the axial direction of the device body 1 and is abutted against the inner end face of the casing 6, the distance between the abutting end face of the movable gauge head 2 and the abutting end face of the fixed gauge head 3 is equal to the diameter of the inner end face of the casing 6, the displacement of the movable gauge head 2 is transmitted to the measuring meter on the gauge stand 4 through the connecting structure 5 which is arranged on the gauge stand 4 and is used for connecting the movable gauge head 2 and the measuring meter, therefore, the displacement of the movable gauge head 2 moving along the axial direction of the device body 1 is measured, and the diameter size of the inner end face of the casing 6 is obtained by adding the displacement of the movable gauge head 2 to the distance between the end face of the movable gauge head 2 and the end face of the fixed gauge head 3 in the original state on the device body 1. Because the distance between the end surface of the movable gauge head 2 and the end surface of the fixed gauge head 3 is larger than the diameter size of the inner end surface of the casing 6 when the device body 1 is not arranged in the casing 6, the movable gauge head 2 moves along the axial direction of the device body 1 after the device body 1 is arranged on the inner bottom surface of the casing under the extrusion of the inner end surface of the casing 6, and because the connecting line of the movable gauge head 2 and the fixed gauge head 3 passes through the center of a circle, the movable gauge head 2 also moves towards the center of a circle along the radial direction of the inner end surface of the casing 6. In the present embodiment, the outer diameter of the annular groove located in the casing 6 for installing the turbine guide vane is measured by using a measuring device, the annular groove is formed on the inner bottom surface of the casing 6 along the inner end surface of the casing 6, and the outer side wall surface of the annular groove is coplanar with the inner end surface of the casing 6, so that the diameter of the inner end surface above the outer side wall surface is measured as the outer diameter of the annular groove. The movable measuring head 2 and the fixed measuring head 3 do not need to extend into the annular groove, so that the annular groove is prevented from being damaged and deformed in the measuring process, and the measuring error is large. And the device body 1 is arranged on the inner bottom surface of the casing 6, and the position of the device body 1 is stable in the measuring process, so that the phenomenon that the movable gauge head 2 shakes during reading to cause inaccurate measurement is avoided. Optionally, the device body 1 comprises a first end for mounting the movable gauge head 2, a second end for mounting the fixed gauge head 3, and a telescopic mechanism for connecting the first and second ends. The distance between the movable measuring head 2 and the fixed measuring head 3 is adjusted by the telescopic mechanism to measure the casings 6 with different sizes and models. In the present embodiment, the meter base 4 is provided with a mounting hole 41 for mounting a universal meter.
As shown in fig. 1, a first end of the device body 1 is provided with a mounting groove for mounting the movable gauge head 2 along an axial direction, the movable gauge head 2 is connected with a first end of the connecting structure 5 and extends out of an opening of the first end of the mounting groove to contact with an inner end surface of the casing 6, a second end of the movable gauge head 2 is connected with the connecting structure 5, the connecting structure 5 comprises a guide rod 51 arranged in the mounting groove and used for sleeving the movable gauge head 2 and guiding the movable gauge head 2 to move axially, a lever 52 extending the first end into the device body 1 and connected with the guide rod 51, and a shaft pin 53 used for hinging the lever 52 to the gauge stand 4, and a measuring head of the measuring gauge abuts against a second end of the lever 52. The distance between the movable gauge head 2 and the fixed gauge head 3 in the original state on the device body 1 is larger than the diameter of the inner end face of the casing 6, so that after the movable gauge head 2 and the guide rod 51 are arranged on the inner bottom face of the casing 6, the movable gauge head 2 and the guide rod 51 move towards the center of the inner cavity of the casing 6 along the mounting groove and drive the first end of the lever 52 hinged on the gauge stand 4 to move, the measuring head of the measuring gauge abutting against the second end of the lever 52 moves, and the displacement of the movable gauge head 2 is measured by reading the measuring gauge. Optionally, connection structure 5 includes L type guide arm, the horizontal segment of L type guide arm stretch into in the mounting groove and with mounting groove sliding connection, the tip of the horizontal segment of L shape guide arm is located to activity gauge head 2 cover, the vertical section of L type guide arm then stretch out from the guide slot of locating on device body 1 and lean on with the gauge head of measuring gauge on gauge stand 4 to be connected. Optionally, a spring 54 is provided in the guide groove along the axial direction of the device body 1 to connect the vertical section of the L-shaped guide rod with the groove wall of the guide groove. The movable gauge head 2 is extruded by the inner end face of the casing 6 to move along the axial direction, so that the L-shaped guide rod is driven to move, and the displacement of the movable gauge head 2 is measured by a measuring meter which is abutted against the vertical section of the L-shaped guide rod.
As shown in fig. 1, the connecting structure 5 further includes a spring 54 disposed on the second end of the lever 52 and connected to the meter base 4, and the movable gauge head 2 moves along the axial direction of the device body 1, so that the second end of the lever 52 drives the spring 54 to stretch or compress in the opposite direction to abut the movable gauge head 2 on the first end of the lever 52 against the inner end surface of the casing 6 by the elastic force of the spring 54, so as to achieve measurement. The spring 54 is installed near the end of the second end of the lever 52, so that the spring 54 is stretched most with the displacement of the movable gauge head 2 unchanged, and therefore the spring force of the spring 54 for abutting the movable gauge head 2 against the inner end surface of the casing 6 is maximized. Therefore, the movable gauge head 2 is prevented from moving to the center of the casing 6 along the radial direction of the casing 6 in the reading process, and the measuring result is prevented from being smaller. After the measurement is finished, the device body 1 is taken out of the casing 6, and the movable gauge head 2 moves axially outward to return to the original state due to the elastic force of the spring 54.
As shown in fig. 1, the distance from the abutment position of the measuring head of the measuring gauge to the axle pin 53 is equal to the distance from the abutment position of the guide rod 51 to the axle pin 53. The displacement of the movable gauge head 2 is equal to the displacement of the measuring head of the measuring gauge. Optionally, the distance between the position of the measuring head of the measuring gauge abutting against the second end of the lever 52 and the axle pin 53 is twice the distance between the position of the guide rod 51 abutting against the first end of the lever 52 and the axle pin 53, so that the displacement of the measuring head of the measuring gauge is equal to twice the displacement of the movable gauge head 2. The distance between the position of the measuring head of the measuring meter abutting against the second end of the lever 52 and the shaft pin 53 and the distance between the position of the guide rod 51 abutting against the first end of the lever 52 and the shaft pin 53 are adjusted according to actual measurement requirements, and the maximum displacement of the movable measuring head 2 is required to be ensured to be transmitted to the displacement of the measuring head of the measuring meter within the measurement range of the measuring meter.
As shown in fig. 2, the abutting end surfaces of the movable gauge head 2 and the fixed gauge head 3 are both arc surfaces, and the highest point of the arc surfaces abuts against the inner end surface of the casing 6. The length dimension of the device body 1 is smaller than the diameter dimension of the inner end face of the casing 6, and the distance between the abutting end face of the movable gauge head 2 and the abutting end face of the fixed gauge head 3 is larger than the sum of the diameter of the inner end face of the casing 6 and the maximum allowable tolerance.
As shown in fig. 2, the end surfaces of both ends of the device body 1 are arc surfaces, and the diameter of the arc surfaces is smaller than that of the inner cavity of the casing 6. In this embodiment, when the measuring device is used to measure the size of the inner end surface, after the device body 1 is placed on the inner bottom surface of the casing 6, the fixed gauge head 3 is fixed on the inner end surface of the casing 6 and the device body 1 is swung in the circumferential direction of the casing 6, so as to ensure that the center of the circle of the inner end surface of the casing 6 is located on the connecting line between the movable gauge head 2 and the fixed gauge head 3, i.e., the distance between the movable gauge head 2 and the fixed gauge head 3 is the diameter size of the inner end surface of the casing 6. The end surfaces of the first end and the second end of the device body 1 are arc surfaces with the diameter smaller than that of the inner cavity of the casing 6, so that the device body 1 is prevented from being blocked when being placed in the casing 6 and swinging along the circumferential direction of the casing 6.
As shown in fig. 2, the method for measuring the size of the inner end surface of the casing 6 according to the present embodiment, which uses the device for measuring the size of the inner end surface of the casing 6, includes the following steps: placing a measuring device on a meter aligning piece, and determining the zero position of a measuring meter; placing the measuring device on a bearing surface of an inner cavity of the casing 6, and enabling the movable measuring head 2 and the fixed measuring head 3 to be pressed against the inner end surface of the casing 6; the fixed measuring head 3 is abutted to the fixed position of the inner end face of the casing 6, the swinging device body 1 is used for adjusting the position of the movable measuring head 2 abutted to the inner end face of the casing 6 so that a connecting line between the movable measuring head 2 and the fixed measuring head 3 passes through the center of a circle of the inner end face of the casing 6, and therefore the distance between the abutting end face of the movable measuring head 2 and the abutting end face of the fixed measuring head 3 is equal to the diameter of the inner end face of the casing 6; and adjusting the position of the movable gauge head 2 which is abutted against the inner end face of the casing 6, and simultaneously reading the offset from the zero point position displayed by the measuring meter, wherein the minimum offset is the diameter size of the inner end face of the casing 6.
The meter aligning piece comprises an upper end face for placing the measuring device and side end faces of two sides for contacting the movable measuring head 2 and the fixed measuring head 3, and the distance between the two side end faces is equal to the diameter size of the inner end face of the standard case 6.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. A measuring device for the outer diameter of an annular groove in a casing is used for measuring the outer diameter of the annular groove which is positioned when a turbine guide blade is installed in the casing (6), the annular groove is arranged on the inner bottom surface of the casing (6) along the inner end surface of the casing (6), the outer side groove wall surface of the annular groove and the inner end surface of the casing (6) are coplanar, the diameter of the inner end surface above the measured outer side groove wall surface is the outer diameter of the annular groove,
the device comprises a device body (1), a movable gauge head (2) which is arranged at the first end of the device body (1) and used for moving along the axial direction of the device body (1) to abut against the inner end face of a casing (6), a fixed gauge head (3) which is arranged at the second end of the device body (1) and used for abutting against the inner end face of the casing (6), a measuring meter used for measuring the displacement of the movable gauge head (2), a meter seat (4) which is arranged on the device body (1) and used for installing the measuring meter, and a connecting structure (5) which is arranged on the meter seat (4) and used for connecting the movable gauge head (2) and the measuring meter;
the device body (1) is arranged on the inner bottom surface of a casing, a connecting line between the movable measuring head (2) and the fixed measuring head (3) passes through the center of a circle of the inner end surface of the casing, the movable measuring head (2) moves along the axial direction of the device body (1) so that the distance between the abutting end surface of the movable measuring head (2) and the abutting end surface of the fixed measuring head (3) is equal to the diameter size of the inner end surface of the casing, and the connecting structure (5) transmits the displacement of the movable measuring head (2) moving along the axial direction of the device body (1) to the measuring meter so as to measure the displacement of the movable measuring head (2) and further measure the diameter size of the inner end surface of the casing (6);
a first end of the device body (1) is provided with an installation groove along the axial direction for installing the movable gauge head (2), the movable gauge head (2) is connected with the first end of the connecting structure (5) and extends out of the opening of the first end of the mounting groove to be in contact with the inner end surface of the casing (6), the second end of the movable measuring head (2) is connected with the connecting structure (5), the connecting structure (5) comprises a guide rod (51) which is arranged in the mounting groove and used for sleeving the movable measuring head (2) and guiding the movable measuring head (2) to move axially, a lever (52) which extends the first end into the device body (1) and is connected with the guide rod (51), and a shaft pin (53) which is used for hinging the lever (52) to the gauge stand (4), and a measuring head of the measuring gauge is abutted against the second end of the lever (52);
the connecting structure (5) also comprises a spring (54) which is arranged on the second end of the lever (52) and is connected with the gauge stand (4),
the movable metering head (2) moves along the axial direction of the device body (1), so that the second end of the lever (52) drives the spring (54) to stretch or compress in the opposite direction to enable the movable metering head (2) on the first end of the lever (52) to abut against the inner end face of the casing (6) through the elastic force of the spring (54) to achieve measurement;
the length size of the device body (1) is smaller than the diameter size of the inner end face of the casing (6), and the distance between the abutting end face of the movable metering head (2) and the abutting end face of the fixed metering head (3) is larger than the sum of the diameter of the inner end face of the casing (6) and the maximum allowable tolerance;
the end surfaces of two ends of the device body (1) are arc surfaces, and the diameter of each arc surface is smaller than that of the inner cavity of the casing (6);
the mounting position of the spring (54) is arranged close to the end part of the second end of the lever (52);
the distance from the abutting position of the measuring head of the measuring meter to the shaft pin (53) is equal to the distance from the abutting position of the guide rod (51) to the shaft pin (53); or the distance between the position of the measuring head of the measuring meter abutting against the second end of the lever (52) and the shaft pin (53) is twice as long as the distance between the position of the guide rod (51) abutting against the first end of the lever (52) and the shaft pin (53), so that the displacement of the measuring head of the measuring meter is equal to twice as long as the displacement of the movable measuring head (2); or the distance between the position of the measuring head of the measuring meter abutting against the second end of the lever (52) and the shaft pin (53) and the distance between the position of the guide rod (51) abutting against the first end of the lever (52) and the shaft pin (53) are adjusted according to actual measurement requirements, and the maximum displacement of the movable measuring head (2) is required to be ensured to be transferred to the displacement of the measuring head of the measuring meter within the measurement range of the measuring meter;
the butt joint end surfaces of the movable measuring head (2) and the fixed measuring head (3) are both arc surfaces, and the contact points with the measuring function of the movable measuring head (2) and the fixed measuring head (3) which are butted on the inner end surface of the casing (6) are both located at the highest point position of the arc surfaces.
2. A method for measuring an outer diameter of an annular groove in a casing, which comprises the steps of using the apparatus for measuring an outer diameter of an annular groove in a casing according to claim 1:
placing a measuring device on a meter aligning piece, and determining the zero position of a measuring meter;
placing the measuring device on a bearing surface of an inner cavity of the casing (6) to enable the movable measuring head (2) and the fixed measuring head (3) to be pressed against the inner end surface of the casing (6);
the fixed measuring head (3) is abutted to the fixed position of the inner end face of the casing, the swinging device body (1) adjusts the position of the movable measuring head (2) abutted to the inner end face of the casing (6) so that the connecting line between the movable measuring head (2) and the fixed measuring head (3) passes through the circle center of the inner end face of the casing, and therefore the distance between the abutting end face of the movable measuring head (2) and the abutting end face of the fixed measuring head (3) is equal to the diameter of the inner end face of the casing;
and adjusting the position of the movable gauge head (2) which is abutted against the inner end face of the casing (6), and simultaneously reading the offset from the zero point position displayed by the measuring meter, wherein the minimum offset is the diameter size of the inner end face of the casing (6), namely the outer diameter of the annular groove in the casing (6).
3. The method of claim 2, wherein the outer diameter of the annular groove is measured,
the meter aligning piece comprises an upper end face for placing the measuring device and side end faces, two sides of the side end faces are used for contacting the movable measuring head (2) and the fixed measuring head (3), and the distance between the two side end faces is equal to the diameter of the inner end face of the standard case (6), namely the outer diameter of the inner annular groove of the standard case (6).
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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109443160A CN109443160A (en) | 2019-03-08 |
| CN109443160B true CN109443160B (en) | 2021-06-25 |
Family
ID=65557826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811494959.XA Active CN109443160B (en) | 2018-12-07 | 2018-12-07 | Device and method for measuring outer diameter of annular groove in casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109443160B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112304228B (en) * | 2020-11-16 | 2023-01-31 | 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 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207730183U (en) * | 2018-01-22 | 2018-08-14 | 东莞共荣精密机械有限公司 | Pivoting support measuring rod |
| CN105509611B (en) * | 2015-11-26 | 2018-09-14 | 沈阳黎明航空发动机(集团)有限责任公司 | The measuring tool and its measurement method of a kind of detection welding casing inner cavity size |
| CN207991423U (en) * | 2018-01-18 | 2018-10-19 | 天津交通职业学院 | A kind of novel inner diameter measuring device |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60135701A (en) * | 1983-12-23 | 1985-07-19 | Nobuyuki Shinkai | Measuring device |
| FI109339B (en) * | 2000-11-24 | 2002-07-15 | T Drill Oy | Fastening and loosening mechanism for a circumferential correction or calibration roller provided with a circumferential groove |
| US7752726B2 (en) * | 2005-11-30 | 2010-07-13 | General Electric Company | Fixture and inspection method for an annular seal |
| CN201463808U (en) * | 2009-06-23 | 2010-05-12 | 北京北内柴油机有限责任公司 | Measuring device for large precisely-bored spigots |
| CN102889841B (en) * | 2012-10-22 | 2015-03-25 | 无锡市迈日机器制造有限公司 | Gear M-value rapid diameter measuring jaw linkage mechanism |
| KR101526512B1 (en) * | 2014-03-13 | 2015-06-17 | 문명성 | internal combustion engine valve furrow checking apparatus |
| CN104075642A (en) * | 2014-06-30 | 2014-10-01 | 成都飞机工业（集团）有限责任公司 | Detecting device for detecting diameters of cylinders and inner diameters of round holes |
| CN105333790A (en) * | 2014-08-13 | 2016-02-17 | 常州兰翔机械有限责任公司 | Measuring tool for measuring annular positioning groove in casing and measuring method |
| CN205090957U (en) * | 2015-08-11 | 2016-03-16 | 昆山奥德鲁自动化技术有限公司 | Car processing bearing inner race ditch footpath and bore detection mechanism |
| CN206618363U (en) * | 2017-04-17 | 2017-11-07 | 江苏汇九齿轮有限公司 | A kind of gear face groove diameter special gauge |
-
2018
- 2018-12-07 CN CN201811494959.XA patent/CN109443160B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105509611B (en) * | 2015-11-26 | 2018-09-14 | 沈阳黎明航空发动机(集团)有限责任公司 | The measuring tool and its measurement method of a kind of detection welding casing inner cavity size |
| CN207991423U (en) * | 2018-01-18 | 2018-10-19 | 天津交通职业学院 | A kind of novel inner diameter measuring device |
| CN207730183U (en) * | 2018-01-22 | 2018-08-14 | 东莞共荣精密机械有限公司 | Pivoting support measuring rod |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109443160A (en) | 2019-03-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101732749B1 (en) | Cumulative-lead errors measurement device and measurement method for ball screw shaft | |
| CN106757558B (en) | Large-drain bottom fixed gauge line profile degree checking device of textile carding machine | |
| CN109443160B (en) | Device and method for measuring outer diameter of annular groove in casing | |
| CN103143987A (en) | Alignment measuring device for use in turning of barrel-shaped parts | |
| CN209783492U (en) | Radial internal clearance detection device for needle bearing rocker arm | |
| JP5317549B2 (en) | Cam profile measuring device | |
| CN207487559U (en) | A kind of screw rod and star-wheel back lash measuring device | |
| CN103769859B (en) | A kind of parallel robot mounting plate and assembly method | |
| CN113405517B (en) | Method, device and system for assembling parts of aero-engine and industrial personal computer | |
| CN211651534U (en) | Quick measuring device of honeycomb seal structure | |
| CN212253911U (en) | Axial dimension measuring tool | |
| CN110861033B (en) | Inclined hole pin pressing tool and pin pressing method | |
| CN114111584B (en) | End face spacing detection device, air conduit assembly size detection tool and method | |
| JPH0452642Y2 (en) | ||
| CN220170135U (en) | Measuring gauge for depth of thrust surface of cylinder body | |
| CN115741075B (en) | Double-screw refrigeration compressor rotor pairing tool | |
| CN113280776B (en) | Diameter measuring device | |
| JPS6237322B2 (en) | ||
| CN215177464U (en) | Hole inner diameter measuring device | |
| CN217179474U (en) | Gear ring annular height measuring tool | |
| CN218895736U (en) | Reel needle detection auxiliary jig | |
| CN114646287B (en) | Quick detection tool and detection method for verticality of inner hole of earring and cylinder barrel | |
| CN215893482U (en) | Utensil is examined in transmission shaft slot pitch special use | |
| CN220708359U (en) | Form and position tolerance detection equipment of shafting assembly body | |
| CN113959299A (en) | Split type bearing bush thickness detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |