CN112504210A - Machine case assembly measuring device - Google Patents
Machine case assembly measuring device Download PDFInfo
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- CN112504210A CN112504210A CN202011294884.8A CN202011294884A CN112504210A CN 112504210 A CN112504210 A CN 112504210A CN 202011294884 A CN202011294884 A CN 202011294884A CN 112504210 A CN112504210 A CN 112504210A
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- measuring
- concentricity
- parallelism
- frame
- casing
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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
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/22—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring angles or tapers; for testing the alignment of axes
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention relates to a cartridge assembly measuring device, comprising a frame with a frame worktable, wherein the frame worktable is provided with a reference plane, a centering and leveling worktable is rotatably arranged on the frame worktable and is used for fixing a cartridge to be measured, the rotating axis of the centering and leveling worktable forms a reference shaft, a measuring assembly comprises a concentricity measuring element and a parallelism measuring element which are arranged on the reference plane through a mounting rack, the concentricity measuring element is used for measuring the concentricity between a concentricity measuring surface of different parts of the cartridge and the reference shaft, the parallelism measuring element is used for measuring the parallelism between a parallelism measuring surface of different parts of the cartridge and the reference plane, the device can provide the reference shaft and the reference plane, the centering and leveling of the lower end part of the cartridge, the reference shaft and the reference plane are carried out by the centering and leveling worktable, the measuring assembly is used for detecting the parts on the upper part of the cartridge, and the adjustment of the mounting position of the upper part is guided according to the detection result, ensuring that the assembled casing has a coaxiality with an acceptable precision.
Description
Technical Field
The invention relates to a machine box assembly measuring device.
Background
The engine is the 'heart' of the aircraft, and the casing is one of the important parts of the aircraft engine, is the base of the whole engine, and is the main bearing part on the aircraft engine.
In a specific structure, the casing is a cylindrical structure formed by assembling a plurality of components along the axial direction, the rotor, the blades and other components are arranged in the casing, high coaxiality needs to be achieved among the components of the casing, and if the coaxiality is unqualified, collision friction between the rotor and the stator of the engine is caused to generate vibration, so that the quality and the service life of the engine are directly influenced. Therefore, during the assembling operation of the casing, the coaxiality of the parts of the casing needs to be measured by using the assembling and measuring device to guide the assembling of the casing, so that the assembled casing has higher coaxiality as a whole.
Disclosure of Invention
The invention aims to provide a cartridge assembly measuring device to guide the assembly of a cartridge in actual production and improve the assembly precision of the cartridge.
The invention relates to a machine box assembly measuring device, which adopts the following technical scheme:
the utility model provides a case assembly measuring device, includes the frame, has the frame workstation, the frame workstation has reference plane, aligning leveling workstation, rotates to install on the frame workstation and is used for fixed quick-witted casket that awaits measuring, and it constitutes the reference axis for frame workstation pivoted axis, and measuring unit includes to be installed through the mounting bracket concentricity measuring element and parallelism measuring element on the reference plane, concentricity measuring element be used for measuring the concentricity of the different parts of quick-witted casket measure the face with concentricity between the reference axis, parallelism measuring element is used for measuring the parallelism between the parallelism measuring face of the different parts of quick-witted casket and the reference plane.
The beneficial effects are that: the device can provide a reference shaft and a reference plane, during measurement, a cartridge receiver to be measured is placed on a centering and leveling workbench, the concentricity between a concentricity measurement surface of a lowest part of the cartridge receiver and the reference shaft and the parallelism between a parallelism measurement surface and the reference plane are measured, the lower end part of the cartridge receiver, the reference shaft and the reference plane are centered and leveled by the centering and leveling workbench, then, a part on the upper part of the cartridge receiver is detected by a measurement assembly, the concentricity between the concentricity measurement surface of an upper part of the cartridge receiver and the reference shaft and the parallelism between the parallelism measurement surface and the reference plane are detected, the adjustment of the installation position of the upper part is guided according to the detection result, and the cartridge receiver after being assembled is ensured to have the coaxiality with qualified precision.
Further, the measuring components are provided with at least two groups, the at least two groups of measuring components are arranged at intervals along the vertical direction, and the group of measuring components positioned at the lowest side is used for detecting and monitoring the concentricity between the concentricity measuring surface of the lower end part of the machine box and the reference shaft and the parallelism between the parallelism measuring surface and the reference plane.
The beneficial effects are that: the device is characterized in that a plurality of groups of measuring assemblies are arranged, the positions of the lower end parts of the casing are detected and monitored by the aid of the lower-most group of measuring assemblies, whether the parts at the lower end of the casing deviate relative to the reference shaft and the reference plane or not can be timely known in the whole process of detecting and adjusting the mounting positions of the upper side parts of the casing, the parts at the lower end of the casing are prevented from being assembled and adjusted relative to the reference shaft and the reference plane, and high-precision assembly of the parts of the casing is guaranteed.
Further, the number of the mounting frames is two, the concentricity measuring elements of each group of measuring components are arranged on one mounting frame at intervals up and down, and the parallelism measuring elements of each group of measuring elements are arranged on the other mounting frame at intervals up and down.
The beneficial effects are that: the concentricity measuring element and the coaxiality measuring element are respectively provided with the mounting frame, so that an operator can conveniently mount and adjust the concentricity measuring element.
Further, the mounting bracket includes the stand and with the horizontal pole of concentricity measurement element and depth of parallelism measurement element one-to-one, the horizontal pole is installed on the stand along self axis and upper and lower position adjustablely to become the cross structure with the stand and arrange, the tip at the horizontal pole that corresponds is installed to concentricity measurement element and depth of parallelism measurement element.
The beneficial effects are that: the cross-shaped cross arrangement structure of the upright posts and the cross bars is adopted, so that the positions of multiple measuring assemblies of an operator can be conveniently adjusted.
Furthermore, the stand column is installed on the reference plane through a guide sliding structure, the guide sliding structure comprises a cushion block fixed on the rack workbench and a sliding block fixed at the lower end of the stand column, the sliding block is assembled on the cushion block in a guide sliding mode, and the extension line of the guide sliding direction passes through the reference shaft.
The beneficial effects are that: the adoption of the guide sliding structure can adjust the position of the measuring element by moving the mounting frame.
Furthermore, the guide sliding structure comprises a V-shaped groove and a V-shaped protrusion, wherein the V-shaped groove is formed in one of the cushion block and the sliding block, the V-shaped protrusion is formed in the other one of the cushion block and the sliding block, and the cushion block and the sliding block are matched in moving direction through the matching of the V-shaped groove and the V-shaped protrusion.
The beneficial effects are that: slider demountable installation is on the cushion, when hoisting the machine casket to aligning leveling workstation, can get off mounting bracket and corresponding measuring element is whole to dismantle through dismantling the slider, realizes the convenience of machine casket hoist and mount, and the back that finishes hoists, when returning the mounting bracket to the frame, the cooperation structure of V-arrangement realizes finding automatically in, and the reference axis is all crossed to the extension line of the direction slip direction of slider when guaranteeing to install at every turn.
Further, the frame workbench is provided with an air-floating main shaft, and the aligning and leveling workbench is installed on the air-floating main shaft in a rotating mode on the frame workbench.
The beneficial effects are that: the air floatation main shaft has extremely high rotation precision, so that a stable and reliable reference shaft is provided for measurement of the casing.
Furthermore, the casing assembly measuring device is also provided with an angle detection mechanism for measuring the rotating angle of the aligning and leveling workbench relative to the frame workbench.
The beneficial effects are that: the angle detection mechanism is arranged, so that an operator can accurately know that the aligning and leveling workbench rotates for a circle, and accurate measurement of the casing is realized.
Further, the angle detection mechanism is an angle sensor arranged on the air floatation rotating shaft.
The beneficial effects are that: an angle sensor is arranged on the air floatation main shaft, so that the simple and convenient arrangement of an angle detection mechanism is realized.
Further, the mounting bracket is detachably mounted on the reference plane.
The beneficial effects are that: when the casing is hoisted to the aligning and leveling workbench, the mounting frame can be detached to avoid the casing and the mounting frame from interference and collision, and the convenience of hoisting the casing is improved.
Drawings
FIG. 1 is a schematic view showing the structure and the usage of an embodiment 1 of the casing assembling and measuring device according to the present invention;
the names of the components corresponding to the corresponding reference numerals in the drawings are:
1-a frame; 2-a frame work bench; 3, air floatation main shaft; 4-aligning and leveling workbench; 5-a casing; 6-a first concentricity measurement element; 7-a second concentricity measurement element; 8-a first parallelism-measuring element; 9-a second parallelism-measuring element; 10-upright post; 11-a cross-bar; 12-a slide block; 13-cushion block; 14-angle sensor.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, which may be present in the embodiments of the present invention, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the recitation of "comprising an … …" may occur without the exclusion of additional like elements present in the process, method, article, or apparatus that comprises the element.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" when they are used are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from specific situations.
In the description of the present invention, unless otherwise specifically stated or limited, the term "provided" may be used in a broad sense, for example, the object of "provided" may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be detachable or non-detachable. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from specific situations.
The present invention will be described in further detail with reference to examples.
The structure and the operation principle of the casing assembly measuring device according to the present invention are described in embodiment 1, in which the casing 5 having a diameter of 1500mm and a height of 2000mm is assembled from the lower end part and the upper end part in fig. 1, but since the casing in actual production is not limited to two parts and the shape of the casing is different for different engines and different parts of the engine, the casing assembly measuring device according to the present invention can be used to detect and guide the assembly of casings of different shapes.
As shown in fig. 1, the casing assembly measuring device includes a frame 1, the frame 1 includes an upper frame table 2, in this embodiment, the frame table 2 is a marble table, and the upper plane has high precision and can be used as a reference plane, and in other embodiments, the reference plane can be partially machined on the upper plane of the frame table 2. Of course, as for the material of the frame workbench, in other embodiments, on the premise that the plane precision meets the requirement, the frame workbench may also be a metal workbench, such as a steel workbench.
A large air floatation main shaft 3 with the bearing capacity exceeding 3000Kg is arranged on the frame workbench 2, a centering and leveling workbench 4 is arranged on the air floatation main shaft 3, and the rotation axis of the air floatation main shaft 3 forms a reference shaft. And a casing fixing structure is arranged on the table top at the upper end of the aligning and leveling workbench 4 and is used for fixedly mounting a casing 5 to be tested. The aligning and leveling workbench can be any aligning and leveling workbench with any structure in the prior art, and the structure and the working principle of the aligning and leveling workbench are not described again. In other embodiments, the bearing capacity of the air spindle may be adaptively adjusted according to an actual object to be used, and when the measured casing is small, the bearing capacity may be smaller than 3000Kg, and when the measured casing is larger, an air bearing with a bearing capacity greater than 3000Kg may be selected.
In order to measure the whole coaxiality of the casing 5 to be measured, two groups of measuring assemblies are further arranged on the rack workbench 2, and each group of measuring assemblies comprises a concentricity measuring element and a parallelism measuring element. The first set of measuring components includes a first concentricity measuring element 6 and a first parallelism measuring element 8, and is used for measuring the concentricity of the concentricity measuring plane of the lower end part of the casing 5 and the reference axis and the parallelism between the parallelism measuring plane and the reference plane. The second group of measuring components includes a second concentricity measuring element 7 and a second parallelism measuring element 9, and measures the concentricity of the concentricity measuring plane and the reference axis and the parallelism between the parallelism measuring plane and the reference plane of the upper end member of the casing 5. In this embodiment, each measuring element is a lever-type electrical micrometer.
Specifically, the first concentricity measuring element 6 and the second concentricity measuring element 7 are mounted on the reference plane through one mounting bracket, the first parallelism measuring element 8 and the second parallelism measuring element 9 are mounted on the reference plane through the other mounting bracket, the structures of the two mounting brackets and the mounting structures of the two mounting brackets on the rack worktable 2 are the same, and the mounting brackets for mounting the first concentricity measuring element 6 and the second concentricity measuring element 7 are taken as an example for describing the mounting brackets.
Specifically, as shown in fig. 1, the mounting rack includes a vertical column 10, two cross bars 11 and a sliding block 12, wherein the two cross bars 11 are arranged at intervals in the up-down direction and both cross the vertical column 10. The end of each cross rod 11 facing the casing mounting position is provided with a concentricity measuring element mounting structure, the first concentricity measuring element 6 and the second concentricity measuring element 7 are respectively mounted at the end parts of the cross rods 11 at corresponding positions, and the extension line of the axis of the cross rods 11 passes through the reference shaft. In particular, the crossbar 11 is mounted on the upright 10 adjustably along its own axis and in an up-and-down position, thus enabling adjustment of the concentricity measuring element in up-and-down and horizontal positions.
The slider 12 is fixed at the lower extreme of stand 10, is fixed with cushion 13 on the frame workstation 2, and the mounting bracket passes through slider 12 and cushion 13 cooperation demountable installation on the frame workstation 2 of frame 1. Specifically, the V-arrangement that the length extends along left right direction is protruding for the cushion 13 upper end, and the lower part of slider 2 has the V-arrangement groove that link up along left right direction, and slider 12 passes through V-arrangement groove and the protruding cooperation of V-arrangement and along controlling the adjustable and removable dress of direction position on cushion 13, realizes that the mounting bracket is along controlling the adjustable of direction position and the holistic removable of mounting bracket.
In order to fix the position of the mounting frame after adjustment, a fixing structure is arranged between the sliding block 12 and the cushion block 13, in the embodiment, the fixing structure comprises a bolt through hole formed in the sliding block 12, correspondingly, a threaded hole is formed in the cushion block 13, after the bolt through hole is aligned with the threaded hole, the sliding block 12 is fixed relative to the cushion block 13 by screwing a bolt in the bolt through hole and the threaded hole, and the threaded holes are arranged in parallel, so that the sliding block 12 can be fixed at different positions. In other embodiments, a V-shaped protrusion may be formed at the lower end of the slider, and a V-shaped sliding groove may be formed on the upper end surface of the pad. The V-shaped structure is adopted for matching, so that the front position and the rear position of the mounting rack mounted on the cushion block 13 are unchanged every time, and the extension line of the cross rod 12 is ensured to pass through the reference shaft.
In this embodiment, each measuring element is connected to a computer, and the computer displays the measurement result. When in specific use, the casing 5 to be measured is arranged on the casing mounting structure of the aligning and leveling worktable 4 according to the concentric circle scale on the table surface of the aligning and leveling worktable 4, the position of the corresponding cross rod 12 is adjusted, so that the first concentricity measuring element 6 and the first parallelism measuring element 8 respectively contact the peripheral surface to be measured and the plane to be measured of the lower end part of the casing 5, as shown in fig. 1, the outer peripheral surface of the lower end of the casing to be measured forms the concentricity measuring plane, the plane to be measured forms the parallelism measuring plane, the indication value of the measuring element is adjusted to be displayed near the middle of the measuring range through the fine adjusting device at the tail end of the measuring element, then adjusting the aligning and leveling worktable 4, adjusting the aligning and leveling worktable according to the indication value change of the measuring element to lead the concentricity measuring surface of the lower end part of the casing 5 to be concentric with the reference shaft, while making the parallelism measuring surface parallel to the reference plane, thereby ensuring that the lower end part of the casing 5 is coaxial with the reference axis. Then corresponding to the position of the cross rod 12, enabling a second concentricity measuring element 7 and a second parallelism measuring element 9 to respectively contact the to-be-measured peripheral surface and the to-be-measured plane of the upper end part of the casing 5, enabling the to-be-measured peripheral surface of the upper end part of the casing to form the concentricity measuring plane of the upper end part of the casing, enabling the to-be-measured plane to form the parallelism measuring plane of the upper end part of the casing, adjusting the measuring elements through a measuring element tail end fine adjustment device to enable the display value of the measuring elements to be close to the middle of the measuring range, manually rotating the aligning and leveling worktable 4, judging the concentricity and the parallelism between the upper end part of the casing and the reference shaft and the reference plane according to the result displayed by the computer, determining the adjustment amount. During the measurement of the upper part of the casing 5, the first concentricity measuring element 6 and the first parallelism measuring element 8 are used to monitor whether the lower part of the casing 5 deviates from a position coaxial with the reference axis. The device is matched with four measuring elements, one side of the device is used for measuring, and parameters such as roundness, jumping, eccentricity angle and the like can be analyzed besides concentricity and parallelism.
In this embodiment, in order to accurately determine the rotation angle of the aligning and leveling table, the casing assembly measurement device further includes an angle detection mechanism for measuring the rotation angle of the aligning and leveling table 4 relative to the frame table 2, and in this embodiment, the angle detection mechanism is an angle sensor 14 disposed at the lower end of the air spindle 3. In other embodiments, scales can be drawn on the table top of the rack workbench 2, and a pointer is arranged on the aligning and leveling rotary platform 3, so as to determine the rotation angle of the aligning and leveling workbench.
The difference between the embodiment 2 of the present invention and the embodiment 1 is that the embodiment 1 is provided with two sets of measuring components to measure the upper side part and the lower side part of the casing, respectively. In other embodiments, the number of the measuring components can be more than three, in combination with the actual structure of the casing to be measured.
The difference between the embodiment 3 of the casing assembly measuring device and the embodiment 1 is that in the embodiment 1, the sliding block is matched with the cushion block in a guiding mode through a V-shaped structure, and in the embodiment, the sliding block is installed on the cushion block through a dovetail sliding block and a dovetail groove in a matching guiding mode.
The difference between the present embodiment 4 of the measurement device for mounting a casing and the present embodiment 1 is that a mounting bracket is provided for each measurement element.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, the scope of the present invention is defined by the appended claims, and all structural changes that can be made by using the contents of the description and the drawings of the present invention are intended to be embraced therein.
Claims (10)
1. A cartridge assembly measuring device, characterized by, includes:
a frame having a frame table, the frame table having a reference plane;
the aligning and leveling workbench is rotatably arranged on the frame workbench and used for fixing a casing to be tested, and a reference shaft is formed by the rotating axis of the aligning and leveling workbench relative to the frame workbench;
the measuring component comprises a concentricity measuring element and a parallelism measuring element which are arranged on the reference plane through a mounting frame, the concentricity measuring element is used for measuring the concentricity between the concentricity measuring surface of different parts of the case and the reference axis, and the parallelism measuring element is used for measuring the parallelism between the parallelism measuring surface of different parts of the case and the reference plane.
2. A casing assembly measuring device according to claim 1, wherein said measuring units are provided in at least two sets, said at least two sets being arranged at intervals in an up-down direction, and a set of measuring units located at a lowermost position being used for detecting and monitoring concentricity between a concentricity measuring plane of a lower end part of the casing and said reference axis and parallelism between a parallelism measuring plane and the reference plane.
3. A casing assembly measuring device according to claim 2, wherein there are two of said mounting brackets, the concentricity measuring member of each of the sets of measuring units being spaced vertically on one of the mounting brackets, and the parallelism measuring member of each of the sets of measuring units being spaced vertically on the other mounting bracket.
4. A casing assembly measuring device according to any one of claims 1 to 3, wherein the mounting frame comprises uprights and cross bars corresponding one to the concentricity measuring element and the parallelism measuring element, the cross bars being adjustably mounted on the uprights along their axes and in an up-down position and arranged in a criss-cross configuration with the uprights, the concentricity measuring element and the parallelism measuring element being mounted at the ends of the corresponding cross bars.
5. The device according to claim 4, wherein the column is mounted on the reference plane by a guide sliding structure, the guide sliding structure includes a block fixed to the frame table and a slider fixed to a lower end of the column, the slider is guide-slidably fitted on the block, and an extension line of a guide sliding direction passes through the reference axis.
6. The apparatus of claim 5, wherein the guiding structure comprises a V-shaped groove formed on one of the block and the slider and a V-shaped protrusion formed on the other of the block and the slider, and the guiding structure is configured to slidably fit the block and the slider and detachably mount the slider on the block by the seating engagement of the V-shaped groove and the V-shaped protrusion.
7. The cartridge assembly measuring device according to any one of claims 1 to 3, wherein the frame table has an air spindle, and the center-adjusting leveling table is rotatably mounted on the frame table by being mounted on the air spindle.
8. The casing assembly measuring device according to any one of claims 1 to 3, further comprising an angle detecting mechanism for measuring an angle of rotation of the center-adjusting leveling table with respect to the frame table.
9. The cartridge mounting measurement device according to claim 8, wherein the angle detection means is an angle sensor provided on an air floating rotary shaft.
10. A casing assembly measuring device according to any one of claims 1 to 3, wherein said mounting bracket is removably mounted to said reference plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202011294884.8A CN112504210B (en) | 2020-11-18 | 2020-11-18 | Machine case assembly measuring device |
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|---|---|---|---|
| CN202011294884.8A CN112504210B (en) | 2020-11-18 | 2020-11-18 | Machine case assembly measuring device |
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| CN112504210A true CN112504210A (en) | 2021-03-16 |
| CN112504210B CN112504210B (en) | 2023-03-31 |
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| CN114088046A (en) * | 2021-11-15 | 2022-02-25 | 北京航空航天大学 | Aeroengine detection device |
| CN114393560A (en) * | 2021-12-14 | 2022-04-26 | 四川航天计量测试研究所 | Full-automatic aligning and leveling device based on air-floating rotary table and attitude adjusting method thereof |
| CN115284227A (en) * | 2022-08-30 | 2022-11-04 | 吉林化工学院 | Automatic adjustment and detection system for surface quality of mandrel and working method thereof |
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| Publication number | Publication date |
|---|---|
| CN112504210B (en) | 2023-03-31 |
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