A device and method for measuring hole dimensions in flange machining.

Abstract

This invention discloses a flange machining hole size measuring device and method, belonging to the field of flange machining technology. The flange machining hole size measuring device includes a mounting base, and further includes: a positioning measuring mechanism, which is mounted on the mounting base and used to position and measure the flange dimensions; a base, coaxially arranged with the mounting base, and a first elastic telescopic rod rotatably arranged between the base and the mounting base; and multiple abutment plates, evenly arranged circumferentially on the base, with the side of the abutment plate facing away from the mounting base abutting against the flange. This invention completes the detection of inner and outer diameters, bolt hole diameters, roundness, and hole position consistency in a single clamping operation, eliminating the cumulative errors of traditional multi-point independent adjustments and improving measurement efficiency and accuracy.

Description

Technical Field

[0001] This invention relates to the field of flange processing technology, and specifically to a flange processing hole size measuring device and method. Background Technology

[0002] In the machinery manufacturing process, a flange is a disc-shaped part, also called a flange plate. They are used in pairs and are mainly used for pipe connections. They are most commonly found in boiler and pipeline engineering. Flange plates are one of the most widely used parts in industry, with a relatively large production volume. At the pipe connection interface, a flange plate is usually installed. Low-pressure pipelines can use threaded flanges, while welded flanges are used for pressures above 4 kg. A sealing ring is placed between two flange plates, and then they are tightened with bolts. Flanges of different pressures have different thicknesses and use different bolts. During flange production, random sampling and measurement of hole dimensions are required.

[0003] However, existing large flanges do not have dedicated hole diameter measuring devices. The hole positions of flanges are usually measured manually using calipers to measure the diameter and hole spacing. Manual measurement is not only time-consuming and prone to errors, but also not conducive to the collection of hole position data. Furthermore, the tools used may not be suitable for measuring flanges of different sizes, and the inability to hold the flanges stably also leads to inaccurate measurement data, thus affecting product quality. Summary of the Invention

[0004] The purpose of this invention is to solve the problems existing in the prior art, and to propose a flange machining hole size measuring device and its measuring method.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A flange machining hole size measuring device includes a mounting base and further includes:

[0007] A positioning and measuring mechanism, which is mounted on a mounting base, is used to position and measure the flange dimensions;

[0008] A base, which is coaxially arranged with a mounting base, and a first elastic telescopic rod is rotatably arranged between the base and the mounting base;

[0009] Abutting plates, wherein multiple abutting plates are provided and are evenly arranged in a circle on the base, and the side of the abutting plate opposite to the mounting base moves against the flange;

[0010] The positioning and measuring mechanism includes a positioning component for positioning the flange, a first measuring component disposed on the positioning component for measuring the inner and outer diameters of the flange, and a second measuring component for measuring the screw holes on the flange.

[0011] Preferably, the positioning assembly includes a plurality of bidirectional screws evenly arranged circumferentially on the mounting base, a first sleeve and a second sleeve threaded onto the bidirectional screws, a first positioning seat disposed on the bidirectional screws, and a second positioning seat disposed on the second sleeve. The first sleeve and the second sleeve are either far apart from or close to each other along the axial direction of the bidirectional screws. The first positioning seat and the second positioning seat are respectively in contact with the inner and outer sidewalls of the flange. A driven bevel gear that meshes with each other is disposed between two adjacent bidirectional screws.

[0012] Preferably, the first positioning seat includes a first support disposed on the lower side of the first sleeve, a first clamping plate disposed at the end of the first support, a first groove formed on the first support, a first slider slidably connected in the first groove, a first elastic element disposed between the first slider and the inner wall of the first groove, and a second elastic telescopic rod disposed between the top of the first slider and the bottom of the first sleeve. The second positioning seat includes a second support fixed on the lower side of the second sleeve, an n-shaped clamping plate slidably connected to the second support, and a third elastic telescopic rod disposed between the n-shaped clamping plate and the second support.

[0013] Preferably, a fixing plate is fixed on the mounting base, and the first support and the second support are slidably connected to the fixing plate.

[0014] Preferably, the first measuring component includes a first scale plate fixed on the mounting base, the first scale plate being arranged parallel to the upper side of the bidirectional screw, a first indicator seat being fixed on the top of the first clamping plate, and a first arrow that mates with the scale lines on the first scale plate being provided on both the first indicator seat and the second sleeve.

[0015] Preferably, the second measuring component includes a first L-shaped plate and a second L-shaped plate that are slidably connected, a fourth elastic telescopic rod that is fixedly connected to the first L-shaped plate, a second slider disposed at the end of the fourth elastic telescopic rod, a second groove formed on the second L-shaped plate for sliding of the second slider, and a second elastic element disposed between the inner walls of the second slider and the second groove. The first L-shaped plate and the second L-shaped plate are both slidably connected to a fixed plate through a connecting rod, and an inclined guide plate is provided at the bottom of the first L-shaped plate and the second L-shaped plate.

[0016] Preferably, the second measuring component further includes a second scale plate fixedly disposed on the second L-shaped plate, and a second indicator seat is fixedly disposed on the first L-shaped plate, the second indicator seat being provided with a second arrow that cooperates with the scale lines on the second scale plate.

[0017] Preferably, the fixing plate is provided with multiple sets of fastening components. The fastening components include a threaded rod that is threadedly connected to the fixing plate, a lifting plate provided at the bottom of the threaded rod, and a worm gear that is rotatably connected to the fixing plate and slidably connected to the threaded rod. The lifting plate is provided with a rubber pad, the worm gear is fixed with a guide strip, and the threaded rod is provided with a guide groove that cooperates with the guide strip.

[0018] Preferably, the fixed plate is further provided with a driving component for driving the fastening component to move. The driving component includes a rotating rod rotatably connected to the fixed plate, a driven gear and a main bevel gear disposed on the rotating rod, a rack plate disposed on the n-shaped clamp and meshing with the driven gear, a telescopic tube fixed to the fixed plate, a worm disposed at the fixed end of the telescopic tube and meshing with the worm gear, and a secondary bevel gear disposed at the telescopic end of the telescopic tube and meshing with the main bevel gear. The telescopic end of the telescopic tube is rotatably connected to the first support through a bearing.

[0019] The present invention also discloses a measurement method for a flange machining hole size measuring device, comprising the following steps:

[0020] S1: Initial setup and flange positioning:

[0021] Place the flange to be tested horizontally on the measuring table, position the measuring device on the upper side of the flange, move the inclined guide plate of the second measuring component to align it with any bolt hole of the flange, press down the mounting base, and the abutment plate contacts the upper surface of the flange to provide initial fixation.

[0022] S2: Screw hole diameter measurement:

[0023] As the inclined guide plate moves downward with the measuring device, it is squeezed by the inner wall of the screw hole, which pushes the first L-shaped plate and the second L-shaped plate closer to each other, compressing the fourth elastic telescopic rod;

[0024] After the first L-shaped plate and the second L-shaped plate are fully inserted into the screw hole, rotate the mounting base slightly left and right, and read the corresponding maximum scale value on the second scale plate through the second arrow. This value is the screw hole diameter. Maintain the maximum distance between the first L-shaped plate and the second L-shaped plate.

[0025] S3: Simultaneous measurement of flange inner and outer diameters:

[0026] Rotating any one of the bidirectional screws will cause all bidirectional screws to rotate synchronously through the driven bevel gear, driving the first sleeve and the second sleeve to move towards each other.

[0027] Inner diameter measurement: After the first clamping plate contacts the inner wall of the flange, the second positioning seat has not yet abutted against the outer diameter side wall of the flange. The first slider compresses the first elastic element to buffer the pressure, and the first arrow indicates the inner diameter of the flange on the first scale plate.

[0028] Outer diameter measurement: The second sleeve pushes the n-shaped clamp against the outer wall of the flange, and the outer diameter value is displayed synchronously by the first scale plate as it moves;

[0029] S4: Clamping Stabilization and Data Locking:

[0030] When the n-shaped clamp moves, the rack plate drives the driven gear to rotate, which in turn drives the main bevel gear to mesh with the secondary bevel gear on the telescopic tube. This causes the worm on the telescopic tube to mesh with the worm wheel on the threaded rod. The worm wheel drives the threaded rod to rotate, causing the threaded rod to move upward relative to the fixed plate. The lifting plate moves upward and presses the first support and the second L-shaped plate against the fixed plate. During this period, the rubber pad on the lifting plate is continuously compressed, locking the positions of the first support and the second L-shaped plate to prevent the measurement from becoming loose.

[0031] S5: Comprehensive inspection of roundness and hole position:

[0032] Then the mounting base is lifted to detach from the base, so that the second measuring component moves out of the screw hole, but the first positioning base and the second positioning base remain in the clamping and positioning state with the inner and outer diameters of the flange;

[0033] If the first clamping plate and the n-shaped clamping plate get stuck during rotation of the rotating mounting base, it indicates that the inner and outer diameters of the flange are not round and do not meet production requirements.

[0034] If the positioning component can rotate along the flange, after moving the second measuring component to the next screw hole, press down the mounting base. If the second measuring component cannot be inserted, the deviation between the current screw hole position and the previous measured screw hole position exceeds the limit and does not meet the production requirements.

[0035] As can be seen from the above technical solutions, the present invention has the following beneficial effects:

[0036] 1. In this invention, the inner and outer diameters, screw hole diameters, roundness, and hole position consistency are detected by a single clamping, which effectively improves the efficiency of workers in measuring multiple parameters of the flange;

[0037] 2. In this invention, the rotation of a single bidirectional screw is used to synchronize all bidirectional screws with the driven bevel gear, ensuring uniform contraction of multiple positioning seats, avoiding eccentric clamping of the flange, ensuring the stability of flange measurement work, eliminating the cumulative error of traditional multi-point independent adjustment, and improving the consistency of inner and outer diameter measurement;

[0038] 3. In this invention, the first clamping plate uses the first slider and the first elastic element to buffer the contact force when measuring the inner diameter, and the third elastic telescopic rod is used to buffer the contact force when measuring the outer diameter, so as to prevent the flange from being damaged by excessive hard collision when clamping the inner and outer diameters of the flange.

[0039] 4. In this invention, by making the inclined guide plate at the bottom of the first L-shaped plate and the second L-shaped plate abut against the inner wall of the screw hole, the first L-shaped plate and the second L-shaped plate approach each other and automatically adapt to the screw hole size. By micro-rotating the mounting base, the maximum distance between the first L-shaped plate and the second L-shaped plate is the screw hole diameter, which eliminates the need for manual adjustment by the operator and improves measurement efficiency.

[0040] 5. In this invention, when the positioning mechanism is working, the driving component drives the fastening component to move, causing the lifting plates of multiple sets of fastening components to lift up the first support and the L-shaped plate respectively, so that the first support and the fixed plate are in close contact, and the L-shaped plate and the fixed plate are in close contact, ensuring that the positioning component always maintains the initial clamping state of the flange and the screw hole size measured by the second measuring component. As the mounting base drives the positioning component and the second measuring component to rotate relative to the flange, the roundness and hole position of the flange are quickly detected. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the measuring device and flange of the present invention. Figure 1 ;

[0042] Figure 2 This is a schematic diagram of the measuring device and flange of the present invention. Figure 2 ;

[0043] Figure 3 This is a schematic diagram of the structure of the present invention after removing the flange. Figure 1 ;

[0044] Figure 4 This is a schematic diagram of the structure of the present invention after removing the flange. Figure 2 ;

[0045] Figure 5 This is a schematic diagram of the mounting base and base of the present invention;

[0046] Figure 6 This is a cross-sectional structural diagram of the mounting base of the present invention;

[0047] Figure 7 This is a schematic diagram of the positioning and measuring mechanism of the present invention;

[0048] Figure 8 For the present invention Figure 7 Enlarged structural diagram of section A in the middle;

[0049] Figure 9 This is a schematic diagram of the external structure of the second sleeve of the present invention;

[0050] Figure 10 This is a schematic diagram of the external structure of the bidirectional screw of the present invention;

[0051] Figure 11 For the present invention Figure 10 Enlarged structural diagram of section B.

[0052] In the diagram: 1. Mounting base; 2. Flange; 201. Screw hole; 3. Base; 301. First elastic telescopic rod; 4. Abutment plate; 5. Double-acting screw; 501. First sleeve; 502. Second sleeve; 503. First positioning seat; 5031. First support; 5032. First clamping plate; 5033. First slide groove; 5034. First slider; 5035. First elastic element; 5036. Second elastic telescopic rod; 504. Second positioning seat; 5041. Second support; 5042. N-shaped clamping plate; 5043. Third elastic telescopic rod; 505. Driven bevel gear; 6. Fixing plate; 7. First scale plate; 701, First arrow; 8, First indicator seat; 9, First L-shaped plate; 901, Fourth elastic telescopic rod; 902, Second slider; 10, Second L-shaped plate; 1001, Second slide groove; 1002, Second elastic element; 11, Connecting rod; 12, Inclined guide plate; 13, Second scale plate; 14, Second indicator seat; 141, Second arrow; 15, Rotating rod; 151, Driven gear; 152, Main bevel gear; 16, Rack plate; 17, Threaded rod; 171, Lifting plate; 172, Worm gear; 1721, Guide bar; 173, Guide groove; 18, Telescopic tube; 181, Worm; 182, Secondary bevel gear. Detailed Implementation

[0053] A preferred embodiment of the present invention will now be described in detail with reference to the accompanying drawings.

[0054] To achieve the above objectives, the embodiments of the present invention adopt the following technical solutions:

[0055] Reference Figures 1 to 5 As shown, this embodiment proposes a flange machining hole size measuring device, including a mounting base 1, and further including: a positioning measuring mechanism, a base 3, and an abutment plate 4. The positioning measuring mechanism is mounted on the mounting base 1 and is used to position and measure the size of the flange 2. The base 3 is coaxially arranged with the mounting base 1 and serves as the basic support platform of the device. A first elastic telescopic rod 301 is rotatably arranged between the base 3 and the mounting base 1. Multiple abutment plates 4 are arranged evenly on the base 3 in a circular pattern. The side of the abutment plate 4 away from the mounting base 1 moves against the flange 2. A buffer pad is embedded at the end of the abutment plate 4 to ensure close contact with the flange 2 and to avoid scratching the surface of the workpiece. The positioning measuring mechanism includes a positioning component for positioning the flange 2, a first measuring component for measuring the inner and outer diameters of the flange 2, and a second measuring component for measuring the screw holes 201 on the flange 2. The second measuring component is independently designed and is specifically designed to measure the diameter and positional accuracy of the screw holes 201 on the flange 2.

[0056] When measuring flange 2, the measuring device is placed on top of flange 2. Then, the abutment plate 4 contacts the upper surface of flange 2 to provide initial positioning. The positioning measuring mechanism is then activated, causing the positioning assembly to clamp flange 2. The second measuring assembly automatically measures the inner and outer diameters of flange 2. The second measuring assembly is positioned within the bolt hole 201 of flange 2 and automatically measures the dimensions of bolt hole 201. When it is necessary to measure the roundness of flange 2 and the consistency of bolt hole 201 positions, the mounting base 1 is raised, causing the positioning measuring mechanism connected to the mounting base 1 to move upwards, and the second measuring assembly moves out of the bolt hole. 201, but the positioning component still maintains the positioning of flange 2. If the mounting base 1 gets stuck during rotation, it indicates that the inner and outer diameters of flange 2 are not round and do not meet production requirements. If the positioning component can rotate along flange 2, and the second measuring component is moved to the next screw hole 201, and the mounting base 1 is pressed down, the second measuring component cannot be inserted. Then the deviation between the current screw hole 201 position and the previous measured screw hole 201 position exceeds the limit and does not meet production requirements. The inner and outer diameters, screw hole 201 diameter, roundness, and hole position consistency are completed in a single clamping, avoiding the repeated positioning of traditional step-by-step operations and effectively improving the efficiency of workers in measuring multiple parameters of flange 2.

[0057] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown, in a preferred embodiment, based on the above method, the positioning assembly further includes a plurality of bidirectional screws 5 evenly arranged circumferentially on the mounting base 1, a first sleeve 501 and a second sleeve 502 threaded on the bidirectional screws 5, a first positioning seat 503 arranged on the bidirectional screws 5, and a second positioning seat 504 arranged on the second sleeve 502. The first sleeve 501 and the second sleeve 502 are either far apart or close to each other along the axial direction of the bidirectional screws 5. The first sleeve 501 has a left-hand thread and engages with the front half of the bidirectional screws 5; the second sleeve 502 has a right-hand thread and engages with the rear half of the bidirectional screws 5. The first positioning seat 503 and the second positioning seat 504 movably abut against the inner and outer sidewalls of the flange 2, respectively. A driven bevel gear 505 meshes between two adjacent bidirectional screws 5.

[0058] Place the flange 2 on the measuring table and manually rotate any one of the bidirectional screws 5. All bidirectional screws 5 are linked by the driven bevel gear 505. When the bidirectional screws 5 rotate: the first sleeve 501 drives the first positioning seat 503 to move axially and contact the inner wall of the flange 2, and the second sleeve 502 drives the second positioning seat 504 to move axially and contact the outer wall of the flange 2. When the first positioning seat 503 and the second positioning seat 504 are in contact with the flange 2 and cannot move, stop driving the bidirectional screws 5 to rotate, so as to achieve the center clamping of the flange 2. At this time, if the flange 2 is round, the central axis of the mounting seat 1 and the flange 2 are in the same straight line.

[0059] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, in a preferred embodiment, based on the above method, the first positioning seat 503 further includes a first support 5031 disposed on the lower side of the first sleeve 501, a first clamping plate 5032 disposed at the end of the first support 5031, a first groove 5033 opened on the first support 5031, a first slider 5034 slidably connected in the first groove 5033, a first elastic element 5035 disposed between the first slider 5034 and the inner wall of the first groove 5033, and a second elastic telescopic rod 5036 disposed between the top of the first slider 5034 and the bottom of the first sleeve 501. The second positioning seat 504 includes a second support 5041 fixed on the lower side of the second sleeve 502, an n-shaped clamping plate 5042 slidably connected on the second support 5041, and a third elastic telescopic rod 5043 disposed between the n-shaped clamping plate 5042 and the second support 5041.

[0060] Specifically, the first sleeve 501 drives the first support 5031 to move axially along the bidirectional screw 5 via the second elastic telescopic rod 5036, the first slider 5034, and the first elastic element 5035, ultimately causing the first clamping plate 5032 on the lower side of the first support 5031 to abut against the inner diameter of the flange 2. At this time, the second positioning seat 504 does not abut against the outer diameter of the flange 2. As the bidirectional screw 5 continues to rotate, the first sleeve 501 drives the first slider 5034 to move within the first slide groove 5033 via the second elastic telescopic rod 5036, and the first elastic element 5035 is compressed. As the second sleeve 502 drives the n-shaped clamping plate 5042 to approach and contact the outer diameter of the flange 2 via the second support 5041, the n-shaped clamping plate 5042 slides on the first support 5031 under force, and the second elastic telescopic rod 5036... 036 is stretched until the n-shaped clamp 5042 abuts against the outer wall of the first support 5031. At this time, with multiple second positioning seats 504 abutting against the outer diameter of the flange 2, the positioning of the flange 2 is completed. When measuring the inner diameter, the first clamp 5032 uses the first slider 5034 and the first elastic element 5035 to buffer the contact force, and when measuring the outer diameter, it uses the third elastic telescopic rod 5043 to buffer the contact force, so as to prevent damage to the flange 2 due to excessive hard impact when clamping the inner and outer diameters of the flange 2. It should be noted that the contact surfaces of the first clamp 5032 and the n-shaped clamp 5042 with the flange 2 should be provided with ball bearings so that when the mounting seat 1 drives the positioning and measuring mechanism to move upward or rotate relative to the flange 2, the first clamp 5032 and the n-shaped clamp 5042 can slide smoothly.

[0061] Reference Figure 7 , Figure 8 , Figure 9 and Figure 11 As shown, in a preferred embodiment, based on the above method, a fixing plate 6 is further fixed on the mounting base 1, and the first support 5031 and the second support 5041 are slidably connected to the fixing plate 6; the fixing plate 6 can restrict the movement direction of the first support 5031 and the second support 5041, so that the first support 5031 and the second support 5041 can be axially displaced along the bidirectional screw 5; it should be noted that, since the top of the first support 5031 abuts against the first sleeve 501 through the second elastic telescopic rod 5036, the first support 5031 can move upward and abut against the fixing plate 6 after being subjected to force at the bottom.

[0062] Reference Figure 7 , Figure 8 , Figure 9 and Figure 10As shown, in a preferred embodiment, based on the above method, the first measuring component further includes a first scale plate 7 fixed on the mounting base 1. The first scale plate 7 is arranged parallel to the upper side of the bidirectional screw 5. A first indicator seat 8 is fixed on the top of the first clamping plate 5032. Both the first indicator seat 8 and the second sleeve 502 are provided with first arrows 701 that cooperate with the scale lines on the first scale plate 7. After the bidirectional screw 5 rotates, the first sleeve 501 and the second sleeve 502 are displaced axially along the bidirectional screw 5. After the first clamping plate 5032 contacts the inner wall of the flange 2, the second positioning seat 50... Before the first slider 5034 comes into contact with the outer diameter sidewall of the flange 2, it compresses the first elastic element 5035 to buffer the pressure. The first arrow 701 indicates the inner diameter of the flange 2 on the first scale plate 7. The second sleeve 502 pushes the n-shaped clamp 5042 to abut against the outer wall of the flange 2. As it moves, the first arrow 701 on the second sleeve 502 indicates the corresponding outer diameter value on the first scale plate 7. It should be noted that the first arrow 701 on the second sleeve 502 should be located directly above the side of the n-shaped clamp 5042 closest to the outer diameter of the flange 2 after the n-shaped clamp 5042 is in contact with the first support 5031.

[0063] Reference Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, in a preferred embodiment, based on the above method, the second measuring component further includes a first L-shaped plate 9 and a second L-shaped plate 10 that are slidably connected, a fourth elastic telescopic rod 901 fixedly connected to the first L-shaped plate 9, a second slider 902 disposed at the end of the fourth elastic telescopic rod 901, a second slide groove 1001 opened on the second L-shaped plate 10 for the second slider 902 to slide, and a second elastic element 1002 disposed between the inner walls of the second slider 902 and the second slide groove 1001. The second L-shaped plate 10 can be vertically displaced relative to the first L-shaped plate 9. Both the first L-shaped plate 9 and the second L-shaped plate 10 are slidably connected to the fixed plate 6 through a connecting rod 11. The first L-shaped plate 9 and the second L-shaped plate 10 can be vertically moved upward relative to the fixed plate 6. An inclined guide plate 12 is provided at the bottom of both the first L-shaped plate 9 and the second L-shaped plate 10.

[0064] Furthermore, the second measuring component also includes a second scale plate 13 fixed on the second L-shaped plate 10, a second indicator seat 14 fixed on the first L-shaped plate 9, and a second arrow 141 provided on the second indicator seat 14 that cooperates with the scale lines on the second scale plate 13.

[0065] Specifically, the flange 2 to be tested is placed horizontally on the measuring platform, with the measuring device positioned above the flange 2. The inclined guide plate 12 of the second measuring component is moved to align with any of the bolt holes 201 on the flange. The mounting base 1 is pressed down, and the inclined guide plate 12 is squeezed by the inner wall of the bolt hole 201 as the measuring device moves downward, pushing the first L-shaped plate 9 and the second L-shaped plate 10 closer together, compressing the fourth elastic telescopic rod 901. The first L-shaped plate 9 and the second L-shaped plate 10 abut against the inner wall of the bolt hole 201. At this time, the first L-shaped plate 9 and the second L-shaped plate 10 may not be on symmetrical sides of the bolt hole 201. The operator slightly rotates the mounting base 1 left and right, and reads the corresponding maximum scale value on the second scale plate 13 through the second arrow 141, which is the diameter of the screw hole 201. The maximum distance between the first L-shaped plate 9 and the second L-shaped plate 10 is maintained to ensure consistency in subsequent measurements of the positions of other screw holes 201. It should be noted that ball bearings should also be provided on the side of the inclined guide plate 12, the first L-shaped plate 9, and the second L-shaped plate 10 closest to the inner wall of the screw hole 201 to reduce the moving resistance between the first L-shaped plate 9 and the second L-shaped plate 10 and the inner wall of the screw hole 201 when the positioning and measuring mechanism moves upward.

[0066] Reference Figure 7 , Figure 8 , Figure 9 , Figure 10 and Figure 11 As shown, in a preferred embodiment, based on the above method, the fixing plate 6 is further provided with multiple sets of fastening components. The fastening components include a threaded rod 17 that is threadedly connected to the fixing plate 6, a lifting plate 171 provided at the bottom of the threaded rod 17, and a worm gear 172 that is rotatably connected to the fixing plate 6 and slidably connected to the threaded rod 17. A rubber pad is provided on the lifting plate 171, a guide strip 1721 is fixed on the worm gear 172, and a guide groove 173 that cooperates with the guide strip 1721 is provided on the threaded rod 17.

[0067] Furthermore, the fixed plate 6 is also provided with a driving component for driving the fastening components. The driving component includes a rotating rod 15 rotatably connected to the fixed plate 6, a driven gear 151 and a main bevel gear 152 provided on the rotating rod 15, a rack plate 16 provided on the n-shaped clamp 5042 and meshing with the driven gear 151, a telescopic tube 18 fixed on the fixed plate 6, a worm 181 provided at the fixed end of the telescopic tube 18 and meshing with the worm gear 172, and a secondary bevel gear 182 provided at the telescopic end of the telescopic tube 18 and meshing with the main bevel gear 152. The telescopic end of the telescopic tube 18 is rotatably connected to the first support 5031 through a bearing.

[0068] Specifically, the second sleeve 502 pushes the n-shaped clamp 5042 to abut against the outer wall of the flange 2. When the n-shaped clamp 5042 moves, the rack plate 16 drives the driven gear 151 to rotate, which in turn drives the main bevel gear 152 to mesh with the secondary bevel gear 182 on the telescopic tube 18, causing the worm 181 on the telescopic tube 18 to mesh with the worm wheel 172 on the threaded rod 17. The worm wheel 172 drives the threaded rod 17 to rotate, and the threaded rod 17 moves upward relative to the fixed plate 6. The lifting plate 171 moves upward and presses the first support 5031 and the second L-shaped plate 10 against the fixed plate 6. During this period, the rubber pad on the lifting plate 171 is continuously compressed, locking the positions of the first support 5031 and the second L-shaped plate 10 to prevent loosening during subsequent measurement work.

[0069] The present invention also discloses a measurement method for a flange machining hole size measuring device, comprising the following steps:

[0070] S1: Initial setup and flange positioning:

[0071] Place the flange 2 to be tested horizontally on the measuring table, and place the measuring device on the upper side of the flange 2. Move the inclined guide plate 12 of the second measuring component to align it with any bolt hole 201 of the flange. Press down the mounting base 1 and the abutment plate 4 to contact the upper surface of the flange 2 to provide initial fixation.

[0072] S2: Measurement of screw hole 201 diameter:

[0073] As the measuring device moves downward, the inclined guide plate 12 is squeezed by the inner wall of the screw hole 201, which pushes the first L-shaped plate 9 and the second L-shaped plate 10 closer to each other and compresses the fourth elastic telescopic rod 901.

[0074] After the first L-shaped plate 9 and the second L-shaped plate 10 are fully inserted into the screw hole 201, the mounting base 1 is slightly rotated left and right. The maximum scale value corresponding to the second scale plate 13 is read through the second arrow 141, which is the diameter of the screw hole 201. The maximum distance between the first L-shaped plate 9 and the second L-shaped plate 10 is maintained.

[0075] S3: Simultaneous measurement of flange inner and outer diameters:

[0076] Rotating any one of the bidirectional screws 5 will cause all the bidirectional screws 5 to rotate synchronously through the driven bevel gear 505, driving the first sleeve 501 and the second sleeve 502 to move towards each other.

[0077] Inner diameter measurement: After the first clamping plate 5032 contacts the inner wall of the flange, the second positioning seat 504 has not yet abutted against the outer diameter side wall of the flange 2. The first slider 5034 compresses the first elastic element 5035 to buffer the pressure, and the first arrow 701 indicates the inner diameter of the flange 2 on the first scale plate 7.

[0078] Outer diameter measurement: The second sleeve 502 pushes the n-shaped clamp 5042 to abut against the outer wall of the flange 2, and the outer diameter value is displayed synchronously by the first scale plate 7 as it moves.

[0079] S4: Clamping Stabilization and Data Locking:

[0080] When the n-shaped clamp 5042 moves, the rack plate 16 drives the driven gear 151 to rotate, which in turn drives the main bevel gear 152 to mesh with the secondary bevel gear 182 on the telescopic tube 18. This causes the worm 181 on the telescopic tube 18 to mesh with the worm wheel 172 on the threaded rod 17. The worm wheel 172 drives the threaded rod 17 to rotate, and the threaded rod 17 moves upward relative to the fixed plate 6. The lifting plate 171 moves upward and presses the first support 5031 and the second L-shaped plate 10 against the fixed plate 6. During this period, the rubber pad on the lifting plate 171 is continuously compressed, locking the positions of the first support 5031 and the second L-shaped plate 10 to prevent the measurement from becoming loose.

[0081] S5: Comprehensive inspection of roundness and hole position:

[0082] Then, the mounting base 1 is lifted up to detach from the base 3, so that the second measuring component moves out of the screw hole 201, but the first positioning base 503 and the second positioning base 504 remain in the clamping and positioning state with the inner and outer diameters of the flange 2.

[0083] If the first clamping plate 5032 and the n-shaped clamping plate 5042 get stuck during rotation of the rotating mounting base 1, it indicates that the inner and outer diameters of the flange 2 are not round and do not meet the production requirements.

[0084] If the positioning component can rotate along the flange 2, after moving the second measuring component to the next screw hole 201, press down the mounting base 1. If the second measuring component cannot be inserted, the deviation between the current screw hole 201 position and the previous measured screw hole 201 position exceeds the limit and does not meet the production requirements.

[0085] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0086] The above-described embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A hole size measuring device for flange machining, comprising a mounting seat (1), characterized in that, Also include: Positioning measurement mechanism, the positioning measurement mechanism is arranged on the mounting base (1), is used for positioning and measuring the size of flange plate (2); Base (3), the base (3) is coaxially arranged with mounting base (1), first elastic telescopic rod (301) is rotationally arranged between the base (3) and mounting base (1); Butt plate (4), the butt plate (4) is provided with multiple and is circumferentially uniformly arranged on the base (3), the side of the butt plate (4) away from the mounting base (1) is movably abutted with the flange plate (2); Wherein, the positioning measurement mechanism includes a positioning assembly for positioning the flange plate (2), a first measuring assembly arranged on the positioning assembly for measuring the inner and outer diameter size of the flange plate (2) and a second measuring assembly for measuring the screw hole (201) on the flange plate (2); The positioning assembly includes a plurality of bidirectional screw rods (5) circumferentially uniformly arranged on the mounting base (1), a first sleeve (501) and a second sleeve (502) threadedly arranged on the bidirectional screw rod (5), a first positioning seat (503) arranged on the bidirectional screw rod (5) and a second positioning seat (504) arranged on the second sleeve (502), the first sleeve (501) and the second sleeve (502) are axially away from or close to each other along the bidirectional screw rod (5), the first positioning seat (503) and the second positioning seat (504) are movably abutted with the inner side wall and the outer side wall of the flange plate (2) respectively, and a driven bevel gear (505) is arranged between adjacent two bidirectional screw rods (5) and is meshed with each other. The first positioning seat (503) comprises a first support (5031) arranged on the lower side of the first sleeve (501), a first clamping plate (5032) arranged on the end of the first support (5031), a first sliding groove (5033) arranged on the first support (5031), a first sliding block (5034) slidably connected in the first sliding groove (5033), a first elastic element (5035) arranged between the first sliding block (5034) and the inner wall of the first sliding groove (5033), and a second elastic telescopic rod (5036) arranged between the top of the first sliding block (5034) and the bottom of the first sleeve (501), the second positioning seat (504) comprises a second support (5041) fixedly arranged on the lower side of the second sleeve (502), an n-shaped clamping plate (5042) slidably connected on the second support (5041), and a third elastic telescopic rod (5043) arranged between the n-shaped clamping plate (5042) and the second support (5041), the mounting seat (1) is fixedly provided with a fixed plate (6), the first support (5031) and the second support (5041) are slidably connected with the fixed plate (6), a plurality of fastening components are arranged on the fixed plate (6), the fastening component comprises a threaded rod (17) threadedly connected with the fixed plate (6), a lifting plate (171) arranged on the bottom of the threaded rod (17), and a worm wheel (172) rotatably connected with the fixed plate (6) and slidably connected with the threaded rod (17), a rubber pad is arranged on the lifting plate (171), a guide strip (1721) is fixedly arranged on the worm wheel (172), and a guide groove (173) matched with the guide strip (1721) is arranged on the threaded rod (17). The fixed plate (6) is further provided with a driving component for driving the fastening component to act, the driving component comprises a rotating rod (15) rotatably connected with the fixed plate (6), a driven gear (151) and a main bevel gear (152) arranged on the rotating rod (15), a rack plate (16) arranged on the n-shaped clamping plate (5042) and engaged with the driven gear (151), an elastic telescopic tube (18) fixedly arranged on the fixed plate (6), a worm (181) arranged on the fixed end of the elastic telescopic tube (18) and engaged with the worm wheel (172), and a secondary bevel gear (182) arranged on the telescopic end of the elastic telescopic tube (18) and engaged with the main bevel gear (152), and the telescopic end of the elastic telescopic tube (18) is rotatably connected with the first support (5031) through a bearing.

2. The hole size measuring device for flange machining according to claim 1, characterized by The first measuring assembly comprises a first scale plate (7) fixedly arranged on the mounting seat (1), the first scale plate (7) is arranged in parallel on the upper side of the bidirectional screw rod (5), the top of the first clamping plate (5032) is fixedly provided with a first indicating seat (8), and the first indicating seat (8) and the second sleeve (502) are both provided with a first arrow (701) matched with the scale line on the first scale plate (7).

3. The hole size measuring device for flange machining according to claim 2, characterized by The second measuring assembly comprises a first L-shaped plate (9) and a second L-shaped plate (9) connected in sliding mode, a fourth elastic telescopic rod (901) fixedly connected with the first L-shaped plate (9), a second sliding block (902) arranged at the end of the fourth elastic telescopic rod (901), a second sliding groove (1001) opened in the second L-shaped plate (10) for sliding of the second sliding block (902), and a second elastic element (1002) arranged between the second sliding block (902) and the inner wall of the second sliding groove (1001).

4. The hole size measuring device for flange machining according to claim 3, characterized by The second measuring assembly further comprises a second scale plate (13) fixedly arranged on the second L-shaped plate (10), and a second indicating seat (14) fixedly arranged on the first L-shaped plate (9), wherein the second indicating seat (14) is provided with a second arrow (141) matched with the scale line on the second scale plate (13).

5. A measurement method of the hole site size measuring device for flange machining according to claim 4, characterized by, The method comprises the following steps: S1: initial setting and flange positioning: Place the flange (2) to be measured horizontally on the measuring table, and place the measuring device on the upper side of the flange (2), move the inclined guide plate (12) of the second measuring assembly to align with any screw hole (201) of the flange, and press down the mounting seat (1) to abut the plate (4) against the upper surface of the flange (2) to provide initial fixation; S2: diameter measurement of the screw hole (201): During the downward movement of the inclined guide plate (12) and the measuring device, the inclined guide plate (12) is pressed by the inner wall of the screw hole (201), which pushes the first L-shaped plate (9) and the second L-shaped plate (10) to move closer to each other, thereby compressing the fourth elastic telescopic rod (901); After the first L-shaped plate (9) and the second L-shaped plate (10) are completely inserted into the screw hole (201), slightly rotate the mounting seat (1) left and right, read the corresponding maximum scale value on the second scale plate (13) through the second arrow (141), which is the diameter of the screw hole (201), and keep the maximum distance between the first L-shaped plate (9) and the second L-shaped plate (10); S3: synchronous measurement of the inner and outer diameters of the flange: Rotate any bidirectional screw rod (5), and drive the first sleeve (501) and the second sleeve (502) to move towards each other through the driven bevel gears (505) connected with all the bidirectional screw rods (5); Inner diameter measurement: after the first clamping plate (5032) contacts the inner wall of the flange, the second positioning seat (504) has not yet abutted against the outer diameter side wall of the flange (2), the first sliding block (5034) compresses the first elastic element (5035) to buffer the pressure, and the first arrow (701) indicates the inner diameter size of the flange (2) on the first scale plate (7); Outer diameter measurement: the second sleeve (502) pushes the n-shaped clamping plate (5042) to abut against the outer wall of the flange (2), and the outer diameter value is displayed synchronously on the first scale plate (7) with the displacement of the n-shaped clamping plate (5042); S4: clamping stabilization and data locking: When the n-shaped clamping plate (5042) moves, the rack plate (16) drives the driven gear (151) to rotate, the main bevel gear (152) is engaged with the auxiliary bevel gear (182) on the telescopic pipe (18) to drive the worm (181) on the telescopic pipe (18) to engage with the worm gear (172) on the threaded rod (17) to drive the threaded rod (17) to rotate, the threaded rod (17) moves upward relative to the fixed plate (6), the lifting plate (171) moves upward and presses the first support (5031) and the second L-shaped plate (10) to abut against the fixed plate (6), during which the rubber pad on the lifting plate (171) is continuously compressed, the first support (5031) and the second L-shaped plate (10) are locked in position, and the measurement is prevented from loosening; S5: roundness and hole position comprehensive detection: Then lift the mounting seat (1) to separate from the base (3), so that the second measurement assembly moves out of the threaded hole (201), but the first positioning seat (503) and the second positioning seat (504) remain in the clamping and positioning state with the inner and outer diameters of the flange plate (2); Rotate the mounting seat (1), if the first clamping plate (5032) and the n-shaped clamping plate (5042) are stuck in rotation, it indicates that the inner and outer diameters of the flange plate (2) are not round, which does not meet the production requirements; If the positioning assembly can rotate along the flange plate (2), after moving the second measurement assembly to the next threaded hole (201), press down the mounting seat (1), if the second measurement assembly cannot be inserted, the current threaded hole (201) position deviates from the previous measured threaded hole (201) position, which exceeds the limit and does not meet the production requirements.

Images