A detection system for complex structure castings using lost foam

Abstract

The present invention relates to the technical field of detection systems, and proposes a detection system for lost foam castings of complex structures, which can not only measure the external contour formed by a matching mold, but also measure the internal cavity contour formed by the matching mold. The matching mold forms a richer measurable range, has better applicability to external contours and internal cavity contours of various shapes and specifications, further reduces usage limitations, and provides richer measurement data. The system comprises a size detection mechanism and a main body mechanism, the main body mechanism comprises an insertion frame and a handheld frame, the insertion frame is fixedly connected to the handheld frame, the size detection mechanism comprises two upper rotating frames and two lower rotating frames, the two upper rotating frames are both equipped with an upper laser measuring instrument, the two lower rotating frames are both equipped with a lower laser measuring instrument, a linkage contact detection structure is installed in the two upper rotating frames and the two lower rotating frames, the two upper rotating frames are both fixedly connected to an upper rotating cylinder, and the two lower rotating frames are both fixedly connected to a lower rotating cylinder.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of detection system, and particularly relates to a detection system for a complex structure lost foam. BACKGROUND

[0002] It is known that the lost foam is a forming technology which can make complex parts and structures, and the lost foam can also improve production efficiency and product precision, and the precision of the lost foam itself fundamentally determines the precision of the product corresponding to the casting, and in order to detect and check the size of the lost foam of the complex structure casting, the present application provides a detection system for a complex structure lost foam.

[0003] According to the search, the Chinese patent with patent number CN118274692B and the Chinese patent with patent number CN218723931U respectively disclose a mold precision detection device and a profile measuring instrument, wherein the former is generally described as including a positioning ring for positioning on an extrusion die, a first gear is rotatably installed at the lower end of the positioning ring, the first gear meshes with a second gear, and the second gear is rotatably installed on the outer ring of the positioning ring, six groups of movable grooves are arranged in the positioning ring, movable blocks are arranged in the movable grooves, the movable blocks are inserted into extrusion blocks, a first spring is arranged between the extrusion blocks and the movable blocks, a measuring ring is rotatably connected to the inner ring of the positioning ring, a measuring mechanism is fixedly installed on the measuring ring, the measuring mechanism includes a rotating seat, the rotating seat is fixedly connected to the measuring ring, a measuring scale is movably inserted into the rotating seat, and a pulley is rotatably installed at one end of the measuring scale, in use, first, the extrusion die is clamped between the six groups of movable blocks, the first spring exerts a rebounding force on the movable blocks, the pin shaft extrudes the groove wall of the inclined groove, the first gear does not deviate by itself, the rotating seat is rotated, the rotating seat drives the measuring ring to rotate along the inner ring of the positioning ring, and the rotating seat drives the measuring scale and the pulley to rotate outward around the outer ring of the casting bar pressure, in the rotating process, the measuring scale moves, the readings on the measuring scale change, four groups of readings are taken, the maximum value and the minimum value are taken, and the deviation range value is calculated, when the measuring scale rotates around the outer ring of the casting bar pressure, the measuring scale drives the turning lever and the ultra-fine marker pen to rotate, the rotating seat drives the movable seat, the marker paper and the ultra-fine marker pen to rotate synchronously, in the rotating process, when the reading of the measuring scale changes, the measuring scale drives the ultra-fine marker pen to draw a line on the marker paper, after the measuring scale rotates one circle, the ultra-fine marker pen is lifted upward, the bolt is screwed, the fixing of the movable seat is released, the movable seat is taken out from the placing groove, and then the length of the line on the marker paper is measured, and the obtained value is the deviation range value, and the latter is generally described as including a base, a support frame is fixedly connected to the top of the base, a first motor is fixedly connected to the top of the support frame, an output end of the first motor is fixedly connected with a rotating shaft, the bottom of the rotating shaft is fixedly connected with a mounting bracket, and the two ends of the mounting bracket are respectively located on the rotating shaft and the support column, in use, the object to be detected is placed on the placing plate, the first motor is started, the rotating shaft drives the mounting bracket to rotate, one end of the mounting bracket rotates on the support column and is limited by the limiting plate, the rotation is stable, the mounting bracket drives the camera to rotate around the object to be detected, and the profile is measured.

[0004] The two prior art solutions described above can realize the measurement of the mold to some extent, but both are mainly for the measurement of the external profile size of the mold, and the measurement effect of the cavity in the mold needs to be further improved, and the measurement data needs to be further enriched. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application provides a detection system for a lost foam mold of a complex structure casting, which can not only be matched with a mold to form measurement of an external contour, but also be matched with a mold to form measurement of an internal cavity contour, has a richer range of measurable mold, is more suitable for various shapes and specifications of external contour and internal cavity contour, further reduces the use limitations, and has richer measurement data.

[0006] To achieve the above object, the present application provides the following technical scheme: a detection system for a lost foam mold of a complex structure casting, comprising a size detection mechanism, further comprising a main body mechanism, the main body mechanism comprising an insertion frame and a handheld frame, the insertion frame being fixedly connected with the handheld frame, the size detection mechanism comprising two upper rotating frames and two lower rotating frames, the two upper rotating frames each being provided with an upper laser measuring instrument, the two lower rotating frames each being provided with a lower laser measuring instrument, the two upper rotating frames and the two lower rotating frames each being provided with a linkage contact detection structure, the two upper rotating frames each being fixedly connected with an upper rotating cylinder, the two lower rotating frames each being fixedly connected with a lower rotating cylinder, the two upper rotating cylinders and the two lower rotating cylinders each being rotatably connected with the insertion frame, the two upper rotating cylinders each being fixedly connected with an upper synchronous gear, the two lower rotating cylinders each being fixedly connected with a lower synchronous gear, the insertion frame being provided with a linkage transmission structure, the linkage transmission structure being used for rotatably driving the two upper synchronous gears and the two lower synchronous gears, the insertion frame being provided with a grating ruler, a detection end of the grating ruler being connected with the linkage transmission structure, the handheld frame being provided with a composite driving structure, the composite driving structure being connected and matched with the linkage transmission structure.

[0007] Preferably, the four linkage contact detection structures each comprise a rotating connecting frame and a linkage shaft, the two upper rotating frames and the two lower rotating frames each being provided with a side groove cavity, the four rotating connecting frames each being rotatably connected in the four side groove cavities, the four linkage shafts each being arranged in the two upper rotating cylinders and the two lower rotating cylinders, the four linkage shafts each being fixedly connected in the insertion frame, the four linkage shafts each being rotatably connected with a linkage plate, the four linkage plates each being rotatably connected with the four rotating connecting frames, the four rotating connecting frames each being provided with an outward-facing groove, the four outward-facing grooves each being slidably connected with a detection block, the four outward-facing grooves each being provided with a pressure sensor, and the four detection blocks each being matched with a pressure receiving surface of the four pressure sensors.

[0008] Preferably, the four detection blocks each are fixedly connected with a first elastic spring and a second elastic spring, the four first elastic springs each being fixedly connected in the four outward-facing grooves, and the four second elastic springs each being fixedly connected in the four outward-facing grooves.

[0009] Preferably, the linkage transmission structure comprises an upper driving rack and a lower driving rack, both of which are slidingly connected in the insertion frame, both of the upper synchronous gears are engaged with the upper driving rack, both of the lower synchronous gears are engaged with the lower driving rack, the upper driving rack and the lower driving rack are both fixedly connected with side racks, the two side racks are engaged with a pair of shift gears, the pair of shift gears are rotationally connected in the insertion frame, and the upper driving rack is connected with the detection end of the grating ruler.

[0010] Preferably, a stepped circular hole is formed in the insertion frame, a central shaft is fixedly connected in the stepped circular hole, the pair of shift gears are rotationally matched on the central shaft, and a stepped positioning block is fixedly connected in the stepped circular hole through assembly bolts.

[0011] Preferably, the composite driving structure comprises a threaded rod, the threaded rod is slidingly connected with the insertion frame, a through hole matched with the threaded rod is formed in the handheld frame, the threaded rod is fixedly connected with the upper driving rack, a composite nut is installed in the handheld frame, and the composite nut is matched with the threaded rod.

[0012] Preferably, the composite nut comprises an intermediate frame, a first internal thread half ring and a second internal thread half ring, the intermediate frame is rotationally connected in the handheld frame, the first internal thread half ring and the second internal thread half ring are both provided with internal threads matched with the threaded rod, the first internal thread half ring and the second internal thread half ring are both slidingly connected with the intermediate frame, and a double positioning assembly is installed in the intermediate frame.

[0013] Preferably, the double positioning assembly comprises a rotating plate, the rotating plate is rotationally connected with the intermediate frame, the rotating plate is fixedly connected with a first threaded driving column and a second threaded driving column, the first internal thread half ring and the second internal thread half ring are both provided with circular grooves, two spiral plates are fixedly connected in the two circular grooves, the two spiral plates are respectively matched with the first threaded driving column and the second threaded driving column, two positioning iron blocks are fixedly connected in the intermediate frame, a permanent magnet is fixedly connected with the rotating plate, and the two positioning iron blocks are matched with the permanent magnet.

[0014] Preferably, a pulling cap is fixedly connected on the threaded rod, a circular shaft rod is fixedly connected on the handheld frame, and a handheld rod is fixedly connected on the circular shaft rod.

[0015] Preferably, a reduced diameter frame is fixedly connected at the bottom end of the insertion frame, a ball cavity is arranged in the reduced diameter frame, a rolling ball is arranged in the ball cavity, and a plurality of through decontamination openings are formed in the reduced diameter frame.

[0016] Compared with the prior art, the detection system for the complex structure casting lost foam has the following beneficial effects:

[0017] (1) In the application, through the design of the main mechanism, the main body of the detection system for the complex structure casting lost foam is formed, which facilitates the corresponding installation of the core size detection mechanism, and also facilitates the operation of the handheld in the use process. The overall structure is relatively compact, which facilitates the matching insertion of the inner cavity profile of the complex structure casting lost foam, and further reduces the use limitations.

[0018] (2) In the application, through the design of the size detection mechanism, the detection function component of the detection system for the complex structure casting lost foam is formed. It not only can measure the external profile of the matched mold, but also can measure the inner cavity profile of the matched mold. The measurable range of the matched mold is more abundant, and the applicability of various shapes and specifications of external profile and inner cavity profile is better. The measurement data is more abundant.

[0019] (3) In the application, through the design of the linkage transmission structure, the adjustment operation of the size detection mechanism relative to the main mechanism can be realized. The size detection mechanism is convenient for unfolding and storage after use relative to the main mechanism. The operation is simple and more practical.

[0020] (4) In the application, through the provision of the linkage contact detection structure, the detection and judgment of the unfolded state of the inner cavity profile of the complex structure casting lost foam relative to the upper rotating frame and the lower rotating frame can be realized. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the application;

[0022] Figure 2 It is a schematic diagram of the overall three-dimensional structure of the application; Figure 1 It is a schematic diagram of the local enlarged structure of A in the application;

[0023] Figure 3 It is a schematic diagram of the local enlarged structure of B in the application; Figure 1

[0024] Figure 4 It is a schematic diagram of the local enlarged structure of B in the application;

[0025] Figure 5 It is a schematic diagram of the local enlarged structure of B in the application;

[0026] Figure 6 It is a schematic diagram of the local enlarged structure of B in the application;

[0027] Figure 7 It is a schematic diagram of the local enlarged structure of B in the application;

[0028] Figure 8 ​Fig. 1 is a schematic diagram of a cross-sectional perspective view of the first internal threaded half ring, the second internal threaded half ring, and the rotating plate of the present application in cooperation;

[0029] Figure 9 Fig. 2 is a schematic diagram of an exploded cross-sectional perspective view of the first internal threaded half ring, the second internal threaded half ring, and the rotating plate of the present application in cooperation;

[0030] Figure 10 Fig. 3 is a schematic diagram of a partial cross-sectional perspective view of the insertion frame, the linkage shaft, and the linkage plate of the present application in cooperation;

[0031] Figure 11 Fig. 4 is a schematic diagram of an exploded perspective view of the handheld frame, the intermediate frame, and the positioning iron block of the present application in cooperation;

[0032] Figure 12 Fig. 5 is a schematic diagram of another angle of the perspective view of the present application as a whole;

[0033] Figure 13 Fig. 6 is a schematic diagram of the present application Figure 12 Fig. 7 is a schematic diagram of a partial enlarged view of the position C in Fig. 6;

[0034] Figure 14 Fig. 8 is a schematic diagram of a partial cross-sectional perspective view of the insertion frame, the handheld frame, and the upper rotating frame of the present application in cooperation;

[0035] Figure 15 Fig. 9 is a schematic diagram of a partial cross-sectional perspective view of the insertion frame, the linkage shaft, and the linkage plate of the present application in cooperation from the bottom;

[0036] Figure 16 Fig. 10 is a schematic diagram of a perspective view of the rotating connection frame, the pressure sensor, and the first elastic spring of the present application in cooperation;

[0037] Figure 17 Fig. 11 is a schematic diagram of a perspective view of the upper rotating frame and the lower rotating frame being rotated and opened relative to the insertion frame of the present application;

[0038] Figure 18 Fig. 12 is a schematic diagram of a partial enlarged view of the position D in Fig. 17;

[0039] Figure 19 Fig. 13 is a schematic diagram of the principle of forming detection of the outer hub relative to the lost foam of the complex structure casting of the present application;

[0040] Figure 20 Fig. 14 is a schematic diagram of the principle of forming detection of the inner cavity profile relative to the lost foam of the complex structure casting of the present application.

[0041] In the figure: 1, the insertion frame; 2, the hand-held frame; 3, the upper rotating frame; 4, the lower rotating frame; 5, the upper laser measuring instrument; 6, the lower laser measuring instrument; 7, the upper rotating cylinder; 8, the lower rotating cylinder; 9, the upper synchronous gear; 10, the lower synchronous gear; 11, the grating ruler; 12, the rotating connecting frame; 13, the linkage shaft; 14, the side slot cavity; 15, the linkage plate; 16, the outward-facing slot; 17, the detection block; 18, the pressure sensor; 19, the first elastic spring; 20, the second elastic spring; 21, the upper driving rack; 22, the lower driving rack; 23, the side rack; 24, the counter-moving gear; 25, the stepped circular hole; 26, the center shaft; 27, the assembly bolt; 28, the stepped positioning block; 29, the threaded rod; 30, the through port; 31, the middle frame; 32, the first internally threaded half ring; 33, the second internally threaded half ring; 34, the rotating plate; 35, the first threaded driving column; 36, the second threaded driving column; 37, the circular slot; 38, the spiral plate; 39, the positioning iron block; 40, the permanent magnet; 41, the pulling cap; 42, the circular shaft rod; 43, the hand-held rod; 44, the reduced-diameter frame; 45, the ball cavity; 46, the rolling ball; 47, the through impurity-removing port; 48, the detection end. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0043] Embodiment, please refer to Figures 1-20The utility model provides a kind of detection system for complex structure casting lost foam, including size detection mechanism, still including main body mechanism, main body mechanism includes insertion frame 1 and handheld frame 2, insertion frame 1 is fixedly connected with handheld frame 2, through the design of main body mechanism, the main body of the detection system for complex structure casting lost foam is formed, it is convenient to install corresponding core size detection mechanism, it is also convenient to operate handheld during use, overall structure is relatively compact, it is convenient to form matched insertion relative to the inner cavity profile of complex structure casting lost foam, use limitation has been further reduced, size detection mechanism includes two upper rotary frame 3 and two lower rotary frame 4, two upper rotary frame 3 are equipped with upper laser measuring instrument 5, two lower rotary frame 4 are equipped with lower laser measuring instrument 6, through the design of size detection mechanism, the detection function component of the detection system for complex structure casting lost foam is formed, it not only can be matched with mould to form the measurement of external profile, but also can be matched with mould to form the measurement of inner cavity profile, matched with mould to form measurable range is richer, the applicability of the external profile and inner cavity profile of multiple shapes and specifications is better, measurement data is richer, two upper rotary frame 3 and two lower rotary frame 4 are equipped with linkage contact detection structure, four linkage contact detection structures include rotary connecting frame 12 and linkage shaft 13, two upper rotary frame 3 and two lower rotary frame 4 are equipped with side groove cavity 14, four rotary connecting frames 12 are rotatably connected in four side groove cavities 14, four linkage shafts 13 are arranged in two upper rotary cylinders 7 and two lower rotary cylinders 8, four linkage shafts 13 are fixedly connected in insertion frame 1, four linkage shafts 13 are rotatably connected with linkage plate 15, four linkage plates 15 are rotatably connected with four rotary connecting frames 12, four rotary connecting frames 12 are equipped with outward groove 16, four detection blocks 17 are slidably connected in four outward grooves 16, four pressure sensors 18 are installed in four outward grooves 16, four detection blocks 17 are matched with pressure surface of four pressure sensors 18, four detection blocks 17 are fixedly connected with first elastic spring 19 and second elastic spring 20, four first elastic springs 19 are fixedly connected in four outward grooves 16, four second elastic springs 20 are also fixedly connected in four outward grooves 16, through the provision of linkage contact detection structure, the detection judgment of the unfolding state of upper rotary frame 3 and lower rotary frame 4 relative to the inner cavity profile of complex structure casting lost foam can be realized.

[0044] It needs to be further explained that the two upper rotating frames 3 are fixedly connected with upper rotating cylinders 7, the two lower rotating frames 4 are fixedly connected with lower rotating cylinders 8, the two upper rotating cylinders 7 and the two lower rotating cylinders 8 are rotationally connected with the insertion frame 1, the two upper rotating cylinders 7 are fixedly connected with upper synchronous gears 9, the two lower rotating cylinders 8 are fixedly connected with lower synchronous gears 10, the linkage transmission structure is installed in the insertion frame 1, the linkage transmission structure is used for the rotational driving of the two upper synchronous gears 9 and the rotational driving of the two lower synchronous gears 10, the grating ruler 11 is installed in the insertion frame 1, the detection end 48 of the grating ruler 11 is connected with the linkage transmission structure, the linkage transmission structure includes an upper driving rack 21 and a lower driving rack 22, the upper driving rack 21 and the lower driving rack 22 are both slidingly connected in the insertion frame 1, the two upper synchronous gears 9 are all in mesh with the upper driving rack 21, the two lower synchronous gears 10 are all in mesh with the lower driving rack 22, the upper driving rack 21 and the lower driving rack 22 are both fixedly connected with side racks 23, the two side racks 23 are in mesh with a pair of shift gears 24, the pair of shift gears 24 are rotationally connected in the insertion frame 1, the upper driving rack 21 is connected with the detection end 48 of the grating ruler 11, the insertion frame 1 is provided with a stepped circular hole 25, the stepped circular hole 25 is fixedly connected with a central shaft 26, the pair of shift gears 24 are rotationally fitted on the central shaft 26, the stepped circular hole 25 is fixedly connected with stepped positioning blocks 28 through assembly bolts 27, through the design of the linkage transmission structure, the adjustment operation of the size detection mechanism relative to the main body mechanism can be realized, the size detection mechanism is convenient for unfolding use relative to the main body mechanism and storage after use, the operation is relatively simple, and it is more practical.

[0045] It needs to be further explained that the handheld frame 2 is provided with a composite driving structure matched with the linkage transmission structure, the composite driving structure comprises a threaded rod 29, the threaded rod 29 is in sliding connection with the insertion frame 1, a through hole 30 matched with the threaded rod 29 is formed in the handheld frame 2, the threaded rod 29 is fixedly connected with the upper driving rack 21, a composite nut is installed in the handheld frame 2 and matched with the threaded rod 29, the threaded rod 29 is fixedly connected with a pulling cap 41, which facilitates quick pulling operation of the threaded rod 29, the composite nut comprises an intermediate frame 31, a first internal thread half ring 32 and a second internal thread half ring 33, the intermediate frame 31 is rotatably connected in the handheld frame 2, the first internal thread half ring 32 and the second internal thread half ring 33 are both provided with internal threads matched with the threaded rod 29, the first internal thread half ring 32 and the second internal thread half ring 33 are both in sliding connection with the intermediate frame 31, a double positioning assembly is installed in the intermediate frame 31, the double positioning assembly comprises a rotating plate 34, the rotating plate 34 is rotatably connected with the intermediate frame 31, the rotating plate 34 is fixedly connected with a first threaded driving column 35 and a second threaded driving column 36, the first internal thread half ring 32 and the second internal thread half ring 33 are both provided with circular grooves 37, two spiral plates 38 are fixedly connected in the two circular grooves 37, the two spiral plates 38 are matched with the first threaded driving column 35 and the second threaded driving column 36 respectively, two positioning iron blocks 39 are fixedly connected in the intermediate frame 31, the rotating plate 34 is fixedly connected with a permanent magnet 40, the two positioning iron blocks 39 are matched with the permanent magnet 40, which facilitates adjustment and limitation of the relative position of the first internal thread half ring 32 and the second internal thread half ring 33, a circular shaft rod 42 is fixedly connected to the handheld frame 2, which facilitates installation of a matching external shaft sleeve structure, a handheld rod 43 is fixedly connected to the circular shaft rod 42, which facilitates gripping of an operator, a reduced diameter frame 44 is fixedly connected to the bottom end of the insertion frame 1, a ball cavity 45 is arranged in the reduced diameter frame 44, a rolling ball 46 is arranged in the ball cavity 45, and a plurality of through impurity removal holes 47 are formed in the reduced diameter frame 44, which can remove impurities on the rolling ball 46.

[0046] The upper laser measuring instrument 5, the lower laser measuring instrument 6, the grating ruler 11 and the pressure sensor 18 in the embodiment are all conventional devices known to those skilled in the art and purchased on the market, and we only use them in the application and do not improve their structures and functions. The setting mode, installation mode and electrical connection mode can be debugged according to the requirements of the instruction manual, and details are not repeated here.

[0047] In summary, the working principle of the detection system for the complex structure casting is that, in use, first, the upper laser measuring instrument 5, the lower laser measuring instrument 6, the grating ruler 11 and the pressure sensor 18 in the detection system for the complex structure casting are matched with the power supply circuit and the information processing computer host, the power supply circuit is connected to the external power supply, the power required for the operation of the upper laser measuring instrument 5, the lower laser measuring instrument 6, the grating ruler 11 and the pressure sensor 18 can be supplied, the detection data of the upper laser measuring instrument 5, the lower laser measuring instrument 6, the grating ruler 11 and the pressure sensor 18 can be read and processed by the information processing computer host, when not in use, the two upper rotating frames 3 and the two lower rotating frames 4 are folded and turned into storage relative to the insertion frame 1, at this time, the state is as shown in the attached Figure 1 When the two upper rotating frames 3 and the two lower rotating frames 4 are adjusted relative to the insertion frame 1, only the threaded rod 29 needs to be adjusted relative to the handheld frame 2, when the threaded rod 29 changes the position relative to the insertion frame 1, it will drive the upper drive rack 21 to move, since the two upper synchronous gears 9 are engaged with the upper drive rack 21, the movement of the upper drive rack 21 will drive the two upper synchronous gears 9 to rotate synchronously, the rotation of the two upper synchronous gears 9 drives the two upper rotating cylinders 7 to rotate, the rotation of the upper rotating cylinders 7 drives the two upper rotating frames 3 to rotate, since the movement of the upper drive rack 21 drives the side rack 23 fixedly connected thereto to move synchronously, and the two side racks 23 are engaged with the shift gear 24, so the movement of one side rack 23 will drive the other side rack 23 to move synchronously, that is, the lower drive rack 22 moves relative to the upper drive rack 21, since the two lower synchronous gears 10 are engaged with the lower drive rack 22, the movement of the lower drive rack 22 will drive the two lower synchronous gears 10 to rotate synchronously, the rotation of the two lower synchronous gears 10 drives the two lower rotating cylinders 8 to rotate, the rotation of the lower rotating cylinders 8 drives the two lower rotating frames 4 to rotate, when the threaded rod 29 pulls upward relative to the insertion frame 1, it will make the two upper rotating frames 3 and the two lower rotating frames 4 rotate and be retracted relative to the insertion frame 1, and when the threaded rod 29 is further inserted downward relative to the insertion frame 1, it will make the two upper rotating frames 3 and the two lower rotating frames 4 rotate and extend relative to the insertion frame 1.

[0048] Further, the threaded rod 29 is adjusted relative to the insertion frame 1, which has two modes of fast adjustment and slow adjustment. When slow adjustment, the rotating plate 34 is pushed up relative to the intermediate frame 31, the permanent magnet 40 and the positioning iron block 39 close to the upper side form a relative magnetic attraction, under the action of the relative magnetic attraction, the rotating plate 34 is limited to rotate and rise, under the transmission action of the first threaded drive column 35 and the second threaded drive column 36 and the two spiral plates 38, when the rotating plate 34 rotates and rises, the first inner threaded half ring 32 and the second inner threaded half ring 33 are relatively close, in this state, the two inner threads are closed to form a complete transmission thread matched with the threaded rod 29, thereafter, by rotating the first inner threaded half ring 32 and the second inner threaded half ring 33, the slow adjustment of the threaded rod 29 relative to the insertion frame 1 can be realized. When fast adjustment, the rotating plate 34 is turned down relative to the intermediate frame 31, the positioning iron block 39 close to the lower side and the permanent magnet 40 form a relative magnetic attraction, so that the first inner threaded half ring 32 and the second inner threaded half ring 33 are separated, the inner thread is separated from the threaded rod 29, in this state, by pulling the cap 41, the fast adjustment of the threaded rod 29 relative to the insertion frame 1 can be realized. After fast adjustment, the rotating plate 34 should be turned up relative to the intermediate frame 31 again, so that the inner thread and the threaded rod 29 form a relative transmission action again, and the auxiliary limiting of the threaded rod 29 relative to the insertion frame 1 is realized. When measuring the inner cavity profile of a complex structure of a lost foam casting, first, adjust the threaded rod 29 to control the two upper rotating frames 3 and the two lower rotating frames 4 to be rotated and retracted relative to the insertion frame 1, then insert the insertion frame 1 from the opening of the inner cavity profile, after the two lower rotating frames 4 and the two upper rotating frames 3 enter the inner cavity profile and the rolling ball 46 contacts the inner bottom surface of the inner cavity profile, adjust the threaded rod 29 to make the two upper rotating frames 3 and the two lower rotating frames 4 rotate out relative to the insertion frame 1. During the movement of the upper drive rack 21, the grating ruler 11 reads the movement distance of the upper drive rack 21 through the change of the detection end 48. Since there is a meshing transmission relationship between the upper drive rack 21 and the upper synchronous gear 9, there is the same movement distance between the meshing surface of the upper synchronous gear 9 and the upper drive rack 21. According to the arc length formula of the sector, the rotation angle of the corresponding upper synchronous gear 9 can be calculated, and finally the rotation angle of the upper rotating frame 3 connected with the upper synchronous gear 9 is obtained. Similarly, according to the measurement data of the grating ruler 11, the rotation angle of the lower synchronous gear 24 is obtained, and the rotation angle of the lower rotating frame 4 relative to the insertion frame 1 is obtained. In order to correspond the rotation angle and the measurement data of the grating ruler 11, the corresponding relationship between the different measurement data of the grating ruler 11 and the rotation angle is debugged and recorded in advance, so as to correspond the rotation angle in the actual detection process.

[0049] Further, in the process of rotating the upper rotating frame 3 and the lower rotating frame 4 relative to the insertion frame 1, the connecting frame 12 connected thereto is rotated, and under the traction of the linkage plate 15 and the linkage shaft 13, the connecting frame 12 always maintains a parallel state with the insertion frame 1. When the detection block 17 comes into contact with the side wall of the inner cavity profile and generates an interaction force, the pressure sensor 18 corresponding to the detection block 17 will form a change in pressure reading. By adjusting the threaded rod 29 relative to the insertion frame 1, the change value of the pressure sensor 18 is kept within the set value, and the set value can be selected according to actual needs to ensure that the detection block 17 is in contact with the side wall of the inner cavity profile, and the relative force between the detection block 17 and the inner side wall of the inner cavity profile does not damage the inner cavity profile. After that, stop adjusting the threaded rod 29 relative to the insertion frame 1, start the two upper laser measuring instruments 5 and the two lower laser measuring instruments 6, and control the insertion frame 1 to form a relative displacement in the inner cavity profile. For the case where the four pressure sensors 18 can all be in contact with the inner side wall of the inner cavity profile, by applying a pushing force perpendicular to the direction of the force detected by the four pressure sensors 18 to the handheld rod 43, the movement of the insertion frame 1 can be achieved. Under the cooperation of the four first elastic springs 19 and the four second elastic springs 20, the detection values of the four pressure sensors 18 can be automatically adjusted or adjusted similarly, and the running track of the insertion frame 1 can be kept centered relative to the inner cavity profile. During displacement, the insertion frame 1 has a relatively centered running track. When the internal structure of the inner cavity profile restricts the four pressure sensors 18 from having appropriate pressure readings, at least two pressure sensors 18 need to have set value pressure readings. If necessary, two pressure sensors 18 within the set value range should be assisted to apply an auxiliary force to keep the two pressure sensors 18 within the set value range, so as to ensure the certainty of the track of the insertion frame 1 during movement. Since the movement track of the insertion frame 1 is determined, the complete measurement of the inner cavity profile can be achieved according to the detection values of the upper laser measuring instrument 5 and the lower laser measuring instrument 6. According to the measured data information processing computer host for reading and calculation, and matching the processed data of the inner cavity profile with the design data of the complex structure lost foam, the detection of the complex structure lost foam can be realized. For the detection of the outer contour of the complex structure lost foam, since the detection of the outer contour is not affected by the insertable space, only the upper rotating frame 3 and the lower rotating frame 4 relative to the insertion frame 1 are rotated to expose the upper laser measuring instrument 5 and the lower laser measuring instrument 6, and then the same side upper laser measuring instrument 5 and lower laser measuring instrument 6 are used to scan the outer contour of the complex structure lost foam. In the process of scanning the outer contour, in order to ensure the reference of the running track of the upper laser measuring instrument 5 and the lower laser measuring instrument 6,The use of the detection system for the complex structure casting of the lost foam can be realized by the track assistance of the outside world. Since the upper laser measuring instrument 5 and the lower laser measuring instrument 6 on the same side have the upper and lower cross coverage, the single measurement range is wider, and the operation convenience is better.

[0050] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely divergences, modifications, replacements and variations of the embodiments, and the scope of the application is defined by the appended claims and their equivalents.

Claims

1. A detection system for complex structure casting lost foam, including a size detection mechanism, characterized in that: The invention also includes a main body mechanism, wherein the main body mechanism includes an insertion frame (1) and a handheld frame (2), wherein the insertion frame (1) is fixedly connected to the handheld frame (2), and the size detection mechanism includes two upper rotating frames (3) and two lower rotating frames (4), wherein the two upper rotating frames (3) are both equipped with an upper laser measuring instrument (5), and the two lower rotating frames (4) are both equipped with a lower laser measuring instrument (6), and a linkage contact detection structure is installed in the two upper rotating frames (3) and the two lower rotating frames (4), wherein the two upper rotating frames (3) are both fixedly connected to an upper rotating cylinder (7), and the two lower rotating frames (4) are both fixedly connected to a lower rotating cylinder (8), and the two upper rotating cylinders (7) are both fixedly connected to a lower rotating cylinder (9). ) and the two lower rotating cylinders (8) are both rotatably connected to the insertion frame (1), the two upper rotating cylinders (7) are both fixedly connected to the upper synchronous gear (9), the two lower rotating cylinders (8) are both fixedly connected to the lower synchronous gear (10), a linkage transmission structure is installed in the insertion frame (1), the linkage transmission structure is used for the rotation drive of the two upper synchronous gears (9) and the rotation drive of the two lower synchronous gears (10), a grating ruler (11) is installed in the insertion frame (1), the detection end (48) of the grating ruler (11) is connected to the linkage transmission structure, a composite drive structure is installed in the handheld frame (2), and the composite drive structure is connected and matched with the linkage transmission structure; The four linkage contact detection structures each include a rotating frame (12) and a linkage shaft (13). Side groove cavities (14) are provided in the two upper rotating frames (3) and the two lower rotating frames (4). The four rotating frames (12) are rotatably connected in the four side groove cavities (14). The four linkage shafts (13) are respectively arranged in the two upper rotating cylinders (7) and the two lower rotating cylinders (8). The four linkage shafts (13) are fixedly connected in the insertion frame (1). The four linkage shafts (13) are rotatably connected to linkage plates (15). The four linkage plates (15) are rotatably connected to the four rotating frames (12). The four rotating frames (12) are each provided with an outward groove (16). The four outward grooves (16) are each slidably connected to a detection block (17). The four outward grooves (16) are each installed with a pressure sensor (18). The four detection blocks (17) are respectively matched with the pressure surfaces of the four pressure sensors (18).

2. The detection system for lost foam castings with complex structures according to claim 1, characterized in that: The four detection blocks (17) are all fixedly connected to a first elastic spring (19) and a second elastic spring (20), the four first elastic springs (19) are respectively fixedly connected in the four outward grooves (16), and the four second elastic springs (20) are also respectively fixedly connected in the four outward grooves (16).

3. The detection system for lost foam castings with complex structures according to claim 2, characterized in that: The linkage transmission structure includes an upper drive rack (21) and a lower drive rack (22), the upper drive rack (21) and the lower drive rack (22) are both slidably connected in the insertion frame (1), the two upper synchronization gears (9) are both engaged with the upper drive rack (21), the two lower synchronization gears (10) are both engaged with the lower drive rack (22), the upper drive rack (21) and the lower drive rack (22) are both fixedly connected with a side rack (23), a shift gear (24) is engaged between the two side racks (23), and the shift gear (24) is rotatably connected in the insertion frame (1), and the upper drive rack (21) is connected to the detection end (48) of the grating ruler (11).

4. The detection system for lost foam castings with complex structures according to claim 3, characterized in that: The insertion frame (1) is provided with a stepped circular hole (25), a central shaft (26) is fixedly connected in the stepped circular hole (25), the counter-shift gear (24) is rotatably engaged with the central shaft (26), and a stepped positioning block (28) is fixedly connected in the stepped circular hole (25) via an assembly bolt (27).

5. The detection system for lost foam castings with complex structures according to claim 4, characterized in that: The composite drive structure comprises a threaded rod (29), the threaded rod (29) being slidably connected to the insertion frame (1), a through opening (30) matching the threaded rod (29) being provided on the handheld frame (2), the threaded rod (29) being fixedly connected to the upper drive rack (21), and a composite nut being installed in the handheld frame (2), the composite nut matching the threaded rod (29).

6. The detection system for lost foam castings with complex structures according to claim 5, characterized in that: The composite nut comprises an intermediate frame (31), a first internally threaded half ring (32) and a second internally threaded half ring (33); the intermediate frame (31) is rotatably connected to the handheld frame (2); the first internally threaded half ring (32) and the second internally threaded half ring (33) are both provided with internal threads matching the threaded rod (29); the first internally threaded half ring (32) and the second internally threaded half ring (33) are both slidably connected to the intermediate frame (31); and a double positioning assembly is installed in the intermediate frame (31).

7. The detection system for lost foam castings with complex structures according to claim 6, characterized in that: The double positioning assembly includes a rotating plate (34), the rotating plate (34) is rotatably connected to the intermediate frame (31), a first threaded driving column (35) and a second threaded driving column (36) are fixedly connected to the rotating plate (34), the first internal threaded half ring (32) and the second internal threaded half ring (33) are both provided with a circular groove (37), a spiral plate (38) is fixedly connected in the two circular grooves (37), the two spiral plates (38) are matched with the first threaded driving column (35) and the second threaded driving column (36) respectively, two positioning iron blocks (39) are fixedly connected in the intermediate frame (31), the rotating plate (34) is fixedly connected with a permanent magnet (40), and the two positioning iron blocks (39) are matched with the permanent magnet (40).

8. The detection system for lost foam castings with complex structures according to claim 7, characterized in that: A pull cap (41) is fixedly connected to the threaded rod (29), a round shaft rod (42) is fixedly connected to the handheld frame (2), and a handheld rod (43) is fixedly connected to the round shaft rod (42).

9. The detection system for lost foam castings with complex structures according to claim 8, characterized in that: The bottom end of the insertion frame (1) is fixedly connected to a reducing frame (44), a ball cavity (45) is provided in the reducing frame (44), a rolling ball (46) is provided in the ball cavity (45), and a plurality of through-holes (47) are provided on the reducing frame (44).

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