CN112504073B - Measuring device and measuring method for box type special-shaped holes - Google Patents
Measuring device and measuring method for box type special-shaped holes Download PDFInfo
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- CN112504073B CN112504073B CN202011421196.3A CN202011421196A CN112504073B CN 112504073 B CN112504073 B CN 112504073B CN 202011421196 A CN202011421196 A CN 202011421196A CN 112504073 B CN112504073 B CN 112504073B
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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
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
- G01B5/06—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness for measuring thickness
- G01B5/061—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness for measuring thickness height gauges
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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
- G01B5/0002—Arrangements for supporting, fixing or guiding the measuring instrument or the object to be measured
- G01B5/0004—Supports
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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
- G01B5/14—Measuring arrangements characterised by the use of mechanical techniques for measuring distance or clearance between spaced objects or spaced apertures
- G01B5/143—Measuring arrangements characterised by the use of mechanical techniques for measuring distance or clearance between spaced objects or spaced apertures between holes on a workpiece
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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
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
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- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The invention discloses a measuring device and a measuring method for box-type special-shaped holes, wherein the measuring device comprises a height scale, a guide rail base, a first vernier and a second vernier, the height scale is composed of a scale body with scale size and a support, a slide rail matched with the support is arranged on the upper surface of the guide rail base, the height scale is detachably arranged in the slide rail in the guide rail base through the support, and the height scale can move left and right in the slide rail through the support; the first vernier and the second vernier are detachably connected with the ruler body in the height scale and form an L-shaped structure with the height scale, and the first vernier and the second vernier can move up and down along the ruler body through the height scale. The measuring device can be used for measuring the center and the position relation of the special-shaped hole or the inclination angle, thereby improving the measuring precision and shortening the measuring time.
Description
Technical Field
The invention relates to the technical field of measuring tools in machining, in particular to a measuring device and a measuring method for box-type special-shaped holes.
Background
With the development of science and technology, in the actual scientific research and production, a lot of holes and shafts are processed, so that the requirements on the processing precision of products are higher and higher, and the requirements on the appearance quality of the products are also higher and tighter. The aircraft is the most widely used aircraft, and the main components of the aircraft mainly comprise the following five major components: a propulsion system, a maneuvering system, a body, a landing gear, and an airborne device. In the five major components of an aircraft, a large number of former structures are involved. The bulkhead structure is a main force transmission and bearing structure commonly used in equipment such as airplanes, missiles, airborne pods and the like, and the bulkhead structure mainly comprises a frame edge, a reinforcing rib and a web plate. The frame edge and the reinforcing ribs are main stress parts of the partition frame, play a leading role in structural force transmission, and the web plate can bear certain in-plane shearing force and normal stress. Meanwhile, in order to reduce the weight of the structure and meet the requirements of environmental control, ventilation and heat dissipation, cable laying and the like, holes are usually formed in the web plate of the bulkhead. The fuselage bulkhead has similar action with wing ribs, is a transverse stress component on the fuselage, and is divided into a reinforced bulkhead and a common bulkhead from the stress point of view.
The common bulkhead has the functions of maintaining the appearance of the airplane, supporting the skin, improving the stability of the skin and facilitating bearing local aerodynamic load, is small in load bearing, is generally formed by bending plates in sections, the outer edges of the common bulkhead are similar to the cross section of the airplane body, the inner edges of the common bulkhead are often arranged and coordinated in the airplane body, the distance between the inner edges and the outer edges is changed, in order to ensure the strength of the bulkhead, the inner edge bulkhead and the outer edge bulkhead are both provided with flanges, and in addition, in order to reduce the weight, a plurality of holes are formed in a web plate of the frame. Due to the poor overall rigidity of conventional frames, a portion of the conventional frame is usually assembled with the stringers and skin to form a panel, and then the component assembly and final assembly are completed to form an integral bulkhead. The reinforced bulkhead has the function of keeping the aerodynamic appearance of the common bulkhead, and has the main function of transmitting the loaded mass force and the load on other parts (wings, empennage and the like) to the fuselage structure through the connecting joint, dispersing the concentrated force and then transmitting the concentrated force to the fuselage skin in the form of shear flow, so that the reinforced bulkhead is a plane structure balanced under the action of the concentrated force and the distributed shear flow. Compared with the common frame, the size and the weight of the frame are both bigger. The structural form of the reinforcing frame is closely related to the shape of the fuselage, the internal loading arrangement, the magnitude and nature of the concentrated force and the characteristics of the fuselage structure supporting it. If the reinforcing frame also serves as an airtight end frame of the pressurized cabin, the pressurization load also affects the structural form of the frame. It can be seen that the factors influencing the structure of the reinforcing frame are various, and the reinforcing frame has various structural forms in order to adapt to different requirements. However, from the aspect of force bearing, the reinforcing frame is basically divided into an integral type and a ring type.
Therefore, according to the particularity of the bulkhead structure, in order to reduce the weight of the structure and meet the requirements of environment-controlled ventilation and heat dissipation, cable laying and the like, holes are required to be formed in the web plate of the bulkhead, and special holes are formed in the web plate of the bulkhead at certain special parts, such as the bulkhead at the oil tank part of the airplane, due to the consideration of the sealing property and the structural rationality, so that the requirement on the forming position is higher. The partition frame structural member belongs to a large box part, and the whole partition frame structural member is difficult to move. As shown in fig. 1, the bulkhead structure has a special-shaped hole i, a special-shaped hole ii, a special-shaped hole iii, and a special-shaped hole iv, and the bulkhead structure may have a special-shaped hole in an inclined state. Therefore, when the device is used for measuring the center distance and the position size of the special-shaped holes of the large box body which is difficult to move, the conventional measuring tool must have a geometric center when detecting the special-shaped holes, the conventional measuring tool cannot be used for measuring the special-shaped holes in the spacer frame, and a measuring device which is simple in structure and convenient to operate and use needs to be designed to solve the problem that the conventional measurement is difficult.
Disclosure of Invention
The invention aims to solve the technical problems in the background art, provides a measuring device which is simple in structure and convenient to operate and use, and is used for measuring the position relation between special-shaped holes so as to solve the problem that different special-shaped holes are difficult to measure in a large box body which is difficult to move, in particular to a measuring device and a measuring method for special-shaped holes of a box body.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a measuring device for box-type special-shaped holes comprises a height scale, a guide rail base, a first vernier and a second vernier, wherein the height scale is composed of a scale body with a first scale value and a support, the guide rail base is arranged in a cuboid structure, a sliding rail matched with the support is arranged on the upper surface of the guide rail base along the length direction of the guide rail base, the height scale is detachably arranged in a sliding rail in the guide rail base through the support, and the height scale can move left and right in the sliding rail through the support; the first vernier and the second vernier are identical in structure and arranged in a parallel state, the first vernier and the second vernier are detachably connected with the ruler body in the height scale and are perpendicular to the ruler body in the height scale to form an L-shaped structure, and the first vernier and the second vernier can move up and down along the ruler body through the height scale.
Furthermore, the measuring device for the box-type special-shaped holes comprises a first vernier and a second vernier, wherein the first vernier and the second vernier are respectively composed of a fixing screw, a connecting sliding sleeve, a measuring claw, a measuring head and a fastening screw, the measuring claw and the connecting sliding sleeve are arranged into an integrated structure, the connecting sliding sleeve is detachably connected with a ruler body in a height scale through the fixing screw, the measuring claw can move up and down along the surface of the ruler body through the matching of the fixing screw and the connecting sliding sleeve, and the measuring head is detachably connected with the measuring claw on one side far away from the connecting sliding sleeve through the fastening screw; and a first secondary scale value corresponding to the first scale value on the ruler body is arranged on the connecting sliding sleeve.
Furthermore, the measuring head is arranged in a conical structure, and the front end of the measuring head is also provided with a probe.
Furthermore, according to the measuring device for the box-type special-shaped holes, a second scale value corresponding to the ruler body in the height scale is arranged on the side face of the sliding rail, and a second auxiliary scale value corresponding to the second scale value on the sliding rail is arranged on the support; and lightening grooves corresponding to the sliding rails are also formed in the bottom surface of the guide rail base along the length direction of the guide rail base.
The invention also discloses a measuring method for measuring the box body type special-shaped holes by using the measuring device, which comprises the following steps:
(1) the measuring device is conveyed to a part to be measured, and the support arranged in the slide rail is utilized to enable the height scale to be positioned right in front of the part to be measured through moving the support left and right; then, the connecting sliding sleeve moves up and down, the first vernier and the second vernier are respectively enabled to align the special-shaped hole to be measured, the fixing screw is adjusted to be fixed with the connecting sliding sleeve, and the height scale is fixed at the same time;
(2) the device is used for measuring the height interval distance of the profiled holes distributed up and down, the measuring heads in the first vernier and the second vernier are respectively inserted into the profiled holes I and the profiled holes II distributed up and down, and the geometric center of the profiled holes can be quickly positioned by using the probe at the front end of the measuring head; respectively reading the height values of the first vernier and the second vernier relative to the bottom surface by utilizing a first scale value arranged on a ruler body in the height scale, wherein the height values are the heights of the special-shaped hole I and the special-shaped hole II relative to the bottom surface, and calculating the height difference between the special-shaped hole I and the special-shaped hole II relative to the bottom surface, namely the height difference between the special-shaped hole I and the special-shaped hole II, and the height is the height spacing distance between the special-shaped hole I and the special-shaped hole II;
(3) the device is used for measuring the horizontal spacing distance of the profiled holes distributed left and right, a first vernier or a second vernier is firstly inserted into the profiled hole I or the profiled hole II, a first horizontal numerical value is read out by utilizing a second scale value arranged on the side surface of the slide rail, and then the first vernier or the second vernier is taken out; simultaneously moving the support to enable the height scale to be positioned right in front of a special-shaped hole III or a special-shaped hole IV in the part to be measured; the first vernier or the second vernier is inserted into the special-shaped hole III or the special-shaped hole IV, a second horizontal value is read by utilizing a second scale value arranged on the side surface of the slide rail, and the difference value between the second horizontal value and the first horizontal value is calculated to obtain the horizontal distance between the special-shaped hole III and the special-shaped hole I or between the special-shaped hole IV and the special-shaped hole II, wherein the horizontal distance is the horizontal spacing distance between the special-shaped hole III and the special-shaped hole I or between the special-shaped hole IV and the special-shaped hole II;
(4) the measuring head in the first vernier or the second vernier is inserted into the top of the special-shaped hole, a first scale value arranged on the ruler body in the height scale is utilized to read a first height numerical value of the measuring head relative to the bottom surface, the same steps are adopted, the measuring head is inserted into the bottom of the special-shaped hole, a second height numerical value of the measuring head relative to the bottom surface is read by utilizing the first scale value arranged on the ruler body in the height scale, and the difference value between the first height numerical value and the second height numerical value is calculated to be the vertical height of the special-shaped hole; the inclination angle of the special-shaped hole can be calculated by comparing the known thickness of the special-shaped hole, namely the width of the special-shaped hole with the obtained vertical height.
Compared with the prior art, the measuring device and the measuring method for the box-type special-shaped hole have the beneficial effects that: because the height scale is internally provided with the first vernier and the second vernier which are parallel to each other, the first vernier and the second vernier can move up and down along the scale body, probes arranged in the first vernier and the second vernier are respectively abutted and contacted with the corresponding special-shaped holes in the partition frame structural part, and the center distance of different special-shaped holes or the inclination angle of the special-shaped holes can be continuously measured by utilizing the first scale value arranged on the scale body and the second scale value on the side surface of the slide rail.
Therefore, the measuring device can meet the requirement of measuring the special-shaped holes of the large box body which is difficult to move, can quickly and accurately measure the geometric centers of the special-shaped holes and the position relation among the special-shaped holes or the inclination angles of the special-shaped holes, thereby improving the measuring precision, shortening the measuring time to the maximum extent, having simple structure, flexible operation and convenient use, and being widely applied to the measuring requirement of large bulkhead structural members.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
FIG. 1 is a schematic perspective view of a bulkhead structure;
FIG. 2 is a schematic perspective view of the measuring device of the present invention;
FIG. 3 is a schematic view of the measuring apparatus according to the present invention;
FIG. 4 is a schematic structural diagram of a measuring apparatus according to the present invention for displaying scale values;
FIG. 5 is a top view of FIG. 4;
FIG. 6 is a structural diagram of a position state before measurement by the measuring device of the present invention;
FIG. 7 is a schematic structural diagram of the measuring device of the present invention for measuring the height or horizontal distance between the profile holes;
FIG. 8 is a schematic structural diagram of the measuring device of the present invention for measuring the inclination angle of the irregular hole.
Shown in the figure: 1-height scale, 11-scale body, 12-support, 2-tight guide rail base, 21-slide rail, 22-lightening groove, 3-first vernier, 4-second vernier, 5-fixing screw, 6-connecting sliding sleeve, 7-measuring claw, 8-measuring head, 81-probe and 9-fastening screw.
Detailed Description
To further illustrate the concepts of the present invention, the following detailed description of the embodiments of the invention is provided in conjunction with the appended drawings:
as shown in fig. 2 and 5, the measuring device for the box-type special-shaped holes comprises a height scale 1, a guide rail base 2, a first vernier 3 and a second vernier 4, wherein the height scale 1 comprises a scale body 11 with a first scale value and a support 12, the guide rail base 2 is arranged in a cuboid structure, a slide rail 21 matched with the support 12 is arranged on the upper surface of the guide rail base 2 along the length direction of the guide rail base, the height scale 1 is detachably arranged in the slide rail 21 in the guide rail base 2 through the support 12, and the height scale 1 can move left and right in the slide rail 21 through the support 12; the first vernier 3 and the second vernier 4 are identical in structure and arranged in a parallel state, the first vernier 3 and the second vernier 4 are detachably connected with the ruler body 11 in the height scale 1 and are perpendicular to the ruler body 11 in the height scale 1 to form an L-shaped structure, and the first vernier 3 and the second vernier 4 can move up and down along the ruler body 11 through the height scale 1.
Further, the measuring device for the box-type special-shaped holes comprises a first vernier 3 and a second vernier 4, which are respectively composed of a fixing screw 5, a connecting sliding sleeve 6, a measuring claw 7, a measuring head 8 and a fastening screw 9, wherein the measuring claw 7 and the connecting sliding sleeve 6 are arranged into an integrated structure, the connecting sliding sleeve 6 is detachably connected with a ruler body 11 in the height scale 1 through the fixing screw 5, the measuring claw 7 can move up and down along the surface of the ruler body 11 through the matching of the fixing screw 5 and the connecting sliding sleeve 6, and the measuring head 8 is detachably connected with the measuring claw 7 far away from one side of the connecting sliding sleeve 6 through the fastening screw 9; and a first secondary scale value corresponding to the first scale value on the ruler body 11 is arranged on the connecting sliding sleeve 6.
Further, according to the measuring device for the box-type special-shaped hole, the measuring head 8 is arranged in a conical structure, and the front end of the measuring head is further provided with the probe 81.
Further, according to the measuring device for the box-shaped special-shaped hole, a second scale value corresponding to the scale body 11 in the height scale 1 is arranged on the side surface of the sliding rail 21, and a second secondary scale value corresponding to the second scale value on the sliding rail 21 is arranged on the support 12; a lightening groove 22 corresponding to the slide rail 21 is also arranged on the bottom surface of the guide rail base 2 along the length direction.
As shown in fig. 6 to 8, in a specific application process, the measuring device of the present invention is used for measuring box-type special-shaped holes, especially for special-shaped holes in a bulkhead structural member, and a measuring method thereof is to adopt different methods according to a position relationship between different special-shaped holes, and specifically includes the following steps:
(1) the measuring device is conveyed to a part to be measured, and the height scale 1 is positioned right in front of the part to be measured by moving the support 12 left and right by using the support 12 arranged in the slide rail 21; then, the connecting sliding sleeve 6 moves up and down, the first vernier 3 and the second vernier 4 are respectively aligned with the special-shaped hole to be measured, the fixing screw 5 is adjusted to be fixed with the connecting sliding sleeve 6, and the height scale 1 is fixed at the same time;
(2) the device is used for measuring the height interval distance of the special-shaped holes distributed up and down, such as the special-shaped holes I and the special-shaped holes II, the measuring heads 8 in the first vernier 3 and the second vernier 4 are respectively inserted into the special-shaped holes I and the special-shaped holes II distributed up and down, and the geometric center of the special-shaped holes can be quickly positioned by using the probes 81 at the front ends of the measuring heads 8; respectively reading the height values of the first vernier 3 and the second vernier 4 relative to the bottom surface by utilizing the first scale value and the second scale value arranged on the ruler body 11 in the height ruler 1, wherein the height values are the heights of the special-shaped hole I and the special-shaped hole II relative to the bottom surface, and calculating the height difference between the special-shaped hole I and the special-shaped hole II relative to the bottom surface, namely the height difference between the special-shaped hole I and the special-shaped hole II, wherein the height is the height interval distance between the special-shaped hole I and the special-shaped hole II;
(3) the device is used for measuring the horizontal spacing distance between the special-shaped holes distributed left and right, such as the horizontal distance between the special-shaped hole I and the special-shaped hole III or the horizontal distance between the special-shaped hole II and the special-shaped hole IV, firstly, the first vernier 3 or the second vernier 4 is inserted into the special-shaped hole I or the special-shaped hole II, the first horizontal numerical value is read out by utilizing the second scale value arranged on the side surface of the slide rail 21, and then the first vernier 3 or the second vernier 4 is taken out; simultaneously moving the support 12 to enable the height scale 1 to be positioned right in front of a special-shaped hole III or a special-shaped hole IV in the part to be measured; the first vernier 3 or the second vernier 4 is inserted into the special-shaped hole III or the special-shaped hole IV, a second horizontal numerical value is read by utilizing a second scale value arranged on the side surface of the slide rail 21, the difference between the second horizontal numerical value and the first horizontal numerical value is calculated, namely the horizontal distance between the special-shaped hole III and the special-shaped hole I or between the special-shaped hole IV and the special-shaped hole II is calculated, and the horizontal distance is the horizontal spacing distance between the special-shaped hole III and the special-shaped hole I or between the special-shaped hole IV and the special-shaped hole II;
(4) the utility model discloses a special-shaped hole inclination angle measurement, be used for to special-shaped hole inclination angle measurement, the hole size of special-shaped hole is less especially, when adopting current bevel protractor to be unable to measure, can change the measuring head 8 of closing in first vernier 3 and the second vernier 4, chooses suitable measuring head 8 for use, measures L1 and L3 respectively to and the difference in height between L2 and the L4, and utilize its width L, just so can conveniently calculate the inclination of special-shaped hole. The method comprises the following specific steps of inserting a measuring head 8 in a first vernier 3 or a second vernier 4 into the top of a special-shaped hole, reading a first height value of the measuring head relative to the bottom surface by utilizing a first scale value arranged on a ruler body 11 in a height scale 1, adopting the same steps, inserting the measuring head 8 into the bottom of the special-shaped hole, reading a second height value of the measuring head relative to the bottom surface by utilizing the first scale value arranged on the ruler body 11 in the height scale 1, and calculating the difference between the first height value and the second height value, namely the vertical height of the special-shaped hole; the inclination angle of the special-shaped hole can be calculated by comparing the known thickness of the special-shaped hole, namely the width of the special-shaped hole with the obtained vertical height.
Because the height scale 1 is provided with the first vernier 3 and the second vernier 4 which are parallel to each other, the first vernier 3 and the second vernier 4 can move up and down along the scale body 11, the probes 81 arranged in the first vernier 3 and the second vernier 4 are respectively abutted and contacted with the corresponding special-shaped holes in the bulkhead structural member, and the center distance of different special-shaped holes or the inclination angle of the special-shaped holes can be continuously measured by utilizing the first scale value arranged on the scale body 11 and the second scale value on the side surface of the slide rail 21. The first scale value arranged on the ruler body 11, the first auxiliary scale value arranged on the connecting sliding sleeve 6 and corresponding to the first scale value, the second scale value arranged on the side surface of the sliding rail 21 and the second auxiliary scale value arranged on the support 12 and corresponding to the second scale value are all manufactured by adopting the technical requirements of the industry standard JJJG 30-2002 universal caliper verification regulations.
Therefore, the measuring device can meet the requirement of measuring the special-shaped holes of the large box body which is difficult to move, can quickly and accurately measure the geometric centers of the special-shaped holes and the position relation among the special-shaped holes or the inclination angles of the special-shaped holes, thereby improving the measuring precision, shortening the measuring time to the maximum extent, having simple structure, flexible operation and convenient use, and being widely applied to the measuring requirement of large bulkhead structural members.
The above description is only a preferred embodiment of the present invention and should not be taken as limiting the present invention, and various modifications and changes will occur to those skilled in the art, and any modifications, equivalents, improvements and the like made by using the present invention are intended to be included in the scope of the present invention.
Claims (1)
1. A method for measuring box type special-shaped holes is characterized in that: the measuring device adopted by the measuring method comprises a height scale (1), a guide rail base (2), a first vernier (3) and a second vernier (4), wherein the height scale (1) consists of a scale body (11) with a first scale value and a support (12), the guide rail base (2) is arranged to be of a cuboid structure, a sliding rail (21) matched with the support (12) is arranged on the upper surface of the guide rail base (2) along the length direction of the guide rail base, the height scale (1) is detachably arranged in the sliding rail (21) in the guide rail base (2) through the support (12), and the height scale (1) can move left and right in the sliding rail (21) through the support (12); the first vernier (3) and the second vernier (4) are identical in structure and arranged in a parallel state, the first vernier (3) and the second vernier (4) are detachably connected with a ruler body (11) in the height scale (1) and are perpendicular to the ruler body (11) in the height scale (1) to form an L-shaped structure, and the first vernier (3) and the second vernier (4) can move up and down along the ruler body (11) through the height scale (1); a second scale value corresponding to the scale body (11) in the height scale (1) is arranged on the side surface of the sliding rail (21), and a second auxiliary scale value corresponding to the second scale value on the sliding rail (21) is arranged on the support (12); a lightening groove (22) corresponding to the sliding rail (21) is also arranged on the bottom surface of the guide rail base (2) along the length direction; the measuring device comprises a first vernier (3) and a second vernier (4), wherein the first vernier (3) and the second vernier (4) are both composed of a fixing screw (5), a connecting sliding sleeve (6), a measuring claw (7), a measuring head (8) and a fastening screw (9), the measuring claw (7) and the connecting sliding sleeve (6) are arranged into an integrated structure, the connecting sliding sleeve (6) is detachably connected with a ruler body (11) in a height scale (1) through the fixing screw (5), the measuring claw (7) can move up and down along the surface of the ruler body (11) through the matching of the fixing screw (5) and the connecting sliding sleeve (6), the measuring head (8) is arranged into a conical structure, a probe (81) is further arranged at the front end of the measuring head, and the measuring head (8) is detachably connected with the measuring claw (7) far away from one side of the connecting sliding sleeve (6) through the fastening screw (9); a first secondary scale value corresponding to the first scale value on the ruler body (11) is arranged on the connecting sliding sleeve (6);
the specific measurement method comprises the following steps:
(1) the measuring device is conveyed to a part to be measured, and the support (12) is moved left and right by utilizing the support (12) arranged in the slide rail (21), so that the height scale (1) is positioned right in front of the part to be measured; then, the connecting sliding sleeve (6) is moved up and down, the first vernier (3) and the second vernier (4) are respectively enabled to align the special-shaped hole to be measured, the fixing screw (5) is adjusted to be fixed with the connecting sliding sleeve (6), and the height scale (1) is fixed at the same time;
(2) the device is used for measuring the height interval distance of the profiled holes distributed up and down, the measuring heads (8) in the first vernier (3) and the second vernier (4) are respectively inserted into the profiled holes I and the profiled holes II distributed up and down, and the geometric center of the profiled holes can be quickly positioned by using the probe (81) at the front end of the measuring head (8); respectively reading the height values of the first vernier (3) and the second vernier (4) relative to the bottom surface by utilizing a first scale value arranged on a ruler body (11) in the height ruler (1), wherein the height values are the heights of the special-shaped hole I and the special-shaped hole II relative to the bottom surface, calculating the height difference between the special-shaped hole I and the special-shaped hole II relative to the bottom surface, namely the height difference between the special-shaped hole I and the special-shaped hole II, and the height is the height interval distance between the special-shaped hole I and the special-shaped hole II;
(3) the device is used for measuring the horizontal spacing distance of the special-shaped holes distributed left and right, a first vernier (3) or a second vernier (4) is firstly inserted into the special-shaped hole I or the special-shaped hole II, a first horizontal value is read out by utilizing a second scale value arranged on the side surface of the sliding rail (21), and then the first vernier (3) or the second vernier (4) is taken out; simultaneously moving the support (12) to enable the height scale (1) to be positioned in front of a special-shaped hole III or a special-shaped hole IV in the part to be measured; the first vernier (3) or the second vernier (4) is inserted into the special-shaped hole III or the special-shaped hole IV, a second horizontal value is read by utilizing a second scale value arranged on the side surface of the slide rail (21), the difference value between the second horizontal value and the first horizontal value is calculated, namely the horizontal distance between the special-shaped hole III and the special-shaped hole I or between the special-shaped hole IV and the special-shaped hole II is obtained, and the horizontal distance is the horizontal spacing distance between the special-shaped hole III and the special-shaped hole I or between the special-shaped hole IV and the special-shaped hole II;
(4) the special-shaped hole inclination angle measuring device is used for measuring the inclination angle of a special-shaped hole, a measuring head (8) in a first vernier (3) or a second vernier (4) is inserted into the top of the special-shaped hole, a first height value of the measuring head relative to the bottom surface is read out by utilizing a first scale value arranged on a ruler body (11) in a height ruler (1), the same steps are adopted, the measuring head (8) is inserted into the bottom of the special-shaped hole, a second height value of the measuring head relative to the bottom surface is read out by utilizing the first scale value arranged on the ruler body (11) in the height ruler (1), and the difference value between the first height value and the second height value is calculated, namely the vertical height of the special-shaped hole; the inclination angle of the special-shaped hole can be calculated by comparing the known thickness of the special-shaped hole, namely the width of the special-shaped hole with the obtained vertical height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011421196.3A CN112504073B (en) | 2020-12-08 | 2020-12-08 | Measuring device and measuring method for box type special-shaped holes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011421196.3A CN112504073B (en) | 2020-12-08 | 2020-12-08 | Measuring device and measuring method for box type special-shaped holes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112504073A CN112504073A (en) | 2021-03-16 |
| CN112504073B true CN112504073B (en) | 2022-06-24 |
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| CN202011421196.3A Active CN112504073B (en) | 2020-12-08 | 2020-12-08 | Measuring device and measuring method for box type special-shaped holes |
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| CN201285270Y (en) * | 2008-10-29 | 2009-08-05 | 奇瑞汽车股份有限公司 | Measuring tool |
| KR20100045816A (en) * | 2008-10-24 | 2010-05-04 | 한국생산기술연구원 | Measuring device for hole size and gap between holes |
| CN204064172U (en) * | 2014-08-04 | 2014-12-31 | 河北省农林科学院旱作农业研究所 | Multiple kinds of crops plant height measuring appliance |
| CN207540469U (en) * | 2017-09-27 | 2018-06-26 | 中国商用飞机有限责任公司 | Measuring tool for holes |
| CN210426410U (en) * | 2019-10-31 | 2020-04-28 | 成都航空职业技术学院 | Two-point measuring scale for vehicle body |
| CN213396819U (en) * | 2020-12-08 | 2021-06-08 | 贵州龙飞航空附件有限公司 | Double-vernier guide rail height gauge |
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| KR20100045816A (en) * | 2008-10-24 | 2010-05-04 | 한국생산기술연구원 | Measuring device for hole size and gap between holes |
| CN201285270Y (en) * | 2008-10-29 | 2009-08-05 | 奇瑞汽车股份有限公司 | Measuring tool |
| CN204064172U (en) * | 2014-08-04 | 2014-12-31 | 河北省农林科学院旱作农业研究所 | Multiple kinds of crops plant height measuring appliance |
| CN207540469U (en) * | 2017-09-27 | 2018-06-26 | 中国商用飞机有限责任公司 | Measuring tool for holes |
| CN210426410U (en) * | 2019-10-31 | 2020-04-28 | 成都航空职业技术学院 | Two-point measuring scale for vehicle body |
| CN213396819U (en) * | 2020-12-08 | 2021-06-08 | 贵州龙飞航空附件有限公司 | Double-vernier guide rail height gauge |
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| CN112504073A (en) | 2021-03-16 |
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