Auxiliary positioning device and method for quadratic element image measuring instrument

Abstract

The invention relates to the technical field of quadratic element image measuring instruments, and particularly discloses an auxiliary positioning device and method for a quadratic element image measuring instrument, the auxiliary positioning device comprises a base, a supporting column and a scanner, the scanner is used for scanning and measuring a to-be-measured part, the auxiliary positioning device further comprises a sliding seat, and the sliding seat is slidably mounted at the upper part of the base; the lifting plate is arranged in the middle of the sliding seat; and the clamping blocks are installed at the top of the lifting plate, the number of the clamping blocks is two, and the two clamping blocks are symmetrically arranged at the two diagonal positions of the lifting plate. The liftable rotating plate is arranged, negative pressure can be generated at the top of the rotating plate, so that when a to-be-tested part is placed on the rotating plate, the to-be-tested part can be adsorbed, and the rotating plate moves upwards by a certain distance, so that the to-be-tested part can be conveniently clamped by the two clamping blocks, and compared with the prior art that clamping is carried out on a plane, the clamping efficiency is greatly improved. And when thin parts are clamped, the effect is better.

Description

Technical Field

[0001] The present invention relates to the technical field of two-dimensional image measuring instruments, and in particular to an auxiliary positioning device and method for a two-dimensional image measuring instrument. Background Art

[0002] The working principle of the two-dimensional image measuring instrument is mainly based on CCD digital imaging and computer image technology. The two-dimensional image measuring instrument first uses an optical microscope to perform high-magnification optical magnification imaging of the object to be measured, and then uses a high-resolution CCD (charge-coupled device) camera system to capture the magnified object image. The image measuring instrument software uses software algorithms to measure object size, shape, angle and other parameters based on the object image. The software will also accurately compensate for the error between the workbench and the optical ruler to ensure the accuracy of the measurement results. After the measurement is completed, the software will generate a graphic on the screen for the operator to compare the image and the image, so as to intuitively distinguish possible deviations in the measurement results. At the same time, the software also supports the annotation function, which can annotate and output the measurement results;

[0003] Auxiliary positioning devices can help the two-dimensional image measuring instrument to more accurately locate the object being measured, thereby reducing measurement errors. For example, turntables and accessories (including indexing tables, single-axis turntables, universal turntables, and CNC turntables) add a degree of freedom of rotational motion to the image measuring instrument, which is convenient for measuring certain types of parts and ensures the accuracy of the measurement results. Since the measuring table of the two-dimensional image measuring instrument is a plane, when it is necessary to measure different angles of the part, the part needs to be clamped, but the prior art parts are directly placed on the surface of the measuring table;

[0004] For example, the auxiliary positioning fixture of a two-dimensional image measuring instrument disclosed in the prior art publication number CN221725250U adopts this direct clamping method. The technology mainly includes a main body, both sides of the main body are fixedly connected with support rods, the surface of the support rods is threadedly connected with side baffles through screws, one end of one side baffle is penetrated with an adjustment column, the surface of the adjustment column is rotatably connected with a blocking rod, the surface of the blocking rod is provided with a blocking mechanism, the top of the other side baffle is provided with an inverted T-shaped adjustment groove, the interior of the adjustment groove is slidably connected with an L-shaped stabilizing rod, and a fixing mechanism is provided between the stabilizing rod and the adjustment groove;

[0005] Since the parts to be measured are usually flat, it is difficult to clamp them when the angle of the parts is converted because the parts are attached to the surface of the measuring table, so the auxiliary positioning mechanism needs to be improved. Summary of the invention

[0006] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0007] The present invention provides an auxiliary positioning device and method for a two-dimensional image measuring instrument, which can solve the problem that existing parts are not easy to be clamped on the measuring table. The specific scheme is as follows:

[0008] In one aspect, the present invention provides an auxiliary positioning device for a two-dimensional image measuring instrument, comprising a base, a support column and a scanner, wherein the scanner is used to scan and measure a part to be measured, and further comprises:

[0009] A sliding seat, the sliding seat being slidably mounted on the upper portion of the base;

[0010] A lifting plate, the lifting plate is arranged in the middle of the sliding seat;

[0011] A clamping block is installed on the top of the lifting plate, and there are two clamping blocks, which are symmetrically arranged at two diagonal positions of the lifting plate. When the two clamping blocks are close to each other, they can clamp the two corners of the part to be tested;

[0012] The two clamping blocks can rise synchronously, approach each other and move away from each other, and the two clamping blocks can drive the part to be measured to rotate.

[0013] Preferably, both ends of the base are fixedly connected with slide rails, and both ends of the slide rails extend to the front and rear ends of the base. The bottom of the sliding seat is fixedly connected with a sliding sleeve, and the sliding sleeve is slidably connected to the slide rails. When the sliding seat slides to the extreme position toward the support column, the middle part of the sliding seat is directly below the scanner, so that the parts to be measured on the sliding seat can be scanned by the scanner, thereby realizing the measurement of the parts to be measured.

[0014] Preferably, it also includes:

[0015] A rack fixedly connected to the bottom of the sliding sleeve at one end of the sliding seat;

[0016] A first motor is fixedly mounted on one end of the base, and the first motor is mounted below the rack;

[0017] A first gear is fixedly connected to the output end of the first motor, the first gear is meshed with the rack, and when the first motor is started, the first gear can be driven to rotate, so that the first gear drives the rack to translate, thereby driving the sliding seat to move along the direction of the slide rail;

[0018] A groove is provided at one end of the base, and when the sliding seat slides to the bottom of the scanner, the groove corresponds to the position of the sliding seat.

[0019] Preferably, it also includes:

[0020] A through slot corresponding to the lifting plate is provided in the middle of the sliding seat, the through slot corresponds to the shape and size of the lifting plate, and the part to be tested is placed above the lifting plate;

[0021] The telescopic member is installed at both ends of the lifting plate, and is used for driving the lifting plate to move up and down along the plumb line direction of the sliding seat. The two ends of the lifting plate are fixedly connected with the limit slider, and the inner wall of the groove is provided with a limit slide groove. The limit slider is slidably connected with the limit slide groove, and the upper and lower ends of the telescopic member are respectively connected with the inner wall top of the limit slide groove and the top of the limit slider.

[0022] Preferably, it also includes:

[0023] A rotating plate is installed in the middle of the top of the lifting plate, and the rotating plate can rotate in the middle of the top of the lifting plate. A connecting hole is opened around the rotating plate, and two ends of the connecting hole pass through the top of the rotating plate and the side of the rotating plate respectively;

[0024] A rotating groove is provided in the middle of the top of the lifting plate. The rotating plate rotates in the rotating groove. There is a gap between the periphery of the rotating plate and the inner wall of the rotating groove.

[0025] Preferably, it also includes:

[0026] A negative pressure channel is provided on the inner wall of the rotating groove, and the other end of the negative pressure channel penetrates to the bottom of the lifting plate;

[0027] An air pump, fixedly mounted on the bottom of the lifting plate;

[0028] A positive pressure channel is provided at the bottom of the inner wall of the rotating groove, and the other end of the positive pressure channel penetrates to the bottom of the lifting plate;

[0029] An exhaust channel is provided at the bottom of the inner wall of the rotating groove, the other end of the exhaust channel penetrates to the bottom of the lifting plate, and the inner diameter of the exhaust channel is smaller than the inner diameter of the positive pressure channel;

[0030] The third motor is fixedly installed at the bottom of the lifting plate. The top output shaft of the third motor is connected with a driving sleeve. The bottom of the rotating plate is fixedly connected with a driving column. The driving column matches the shape of the driving sleeve. The outer wall of the driving column and the inner wall of the driving sleeve are provided with limiting structures that can be interlocked with each other at corresponding positions.

[0031] Preferably, it also includes:

[0032] A sealing ring, the sealing ring is fixedly connected to the bottom of the rotating plate, the periphery of the sealing ring is sealingly and slidingly connected to the inner wall of the rotating groove, an annular sealing cavity is formed between the top of the sealing ring, the side of the rotating plate and the inner wall of the rotating groove, the communicating hole is connected to the sealing cavity, and one end of the negative pressure channel is connected to the sealing cavity;

[0033] A limiting column, fixedly connected to the inner wall of the rotating groove, wherein the limiting column is arranged just above the sealing ring;

[0034] Among them, the negative pressure port of the air pump is connected to the negative pressure channel, and the positive pressure port of the air pump is connected to the positive pressure channel. When the air pump is started, negative pressure is generated in the negative pressure channel, and positive pressure is generated in the positive pressure channel.

[0035] Preferably, the sliding sleeve is fixedly connected to one end of the clamping block, and a sliding cavity is provided inside the sliding sleeve;

[0036] A sealing column, wherein the sealing column is sealingly and slidably mounted inside the sliding sleeve, and when air pressure is generated in the sliding cavity, the sliding sleeve and the sealing column can be driven to slide relative to each other under the drive of the air pressure;

[0037] An air injection pipe connected to one end of the sliding sleeve, the interior of the air injection pipe being in communication with the interior of the sliding cavity;

[0038] A high-pressure pump, the high-pressure pump is installed on the top of the sliding seat, the negative pressure end of the high-pressure pump is connected to a negative pressure tube, and the other end of the negative pressure tube is fixedly connected to the top of the gas injection tube;

[0039] A lifting block, fixedly connected to an end of the sealing column away from the sliding sleeve;

[0040] There are two sliding frames, which are respectively installed at one end of the two clamping blocks, and the bottoms of the two sliding frames are fixedly connected to the two diagonal positions of the lifting plate, and the lifting blocks are slidably connected to the sliding frames;

[0041] The electric telescopic rod has upper and lower ends connected to the top of the inner wall of the sliding frame and the top of the lifting block respectively, and the electric telescopic rod can drive the lifting block to slide up and down in the sliding frame.

[0042] Preferably, it also includes:

[0043] A pressure relief valve, the pressure relief valve is fixedly connected to the outer wall of the sliding sleeve;

[0044] A second gear connected to the middle portion of the sealing column;

[0045] a third gear, rotatably connected to the side wall of the sliding sleeve;

[0046] A second motor is fixedly mounted on the outer wall of the sliding sleeve;

[0047] The fourth gear is fixedly connected to the end of the output shaft of the second motor, the fourth gear is meshed with the third gear, and the third gear is meshed with the second gear.

[0048] On the other hand, the present invention provides an auxiliary positioning method for a two-dimensional image measuring instrument, comprising the following steps:

[0049] S1. Slide the sliding seat to the top of the base away from the end of the support column, and then raise the lifting plate;

[0050] S2, place the part to be tested on the lifting plate in S;

[0051] S3, the scanner measures the front side of the part to be measured;

[0052] S4, the two clamping blocks are moved closer to each other to clamp the part to be tested, and the two clamping blocks are moved upward to leave enough space for the part to be tested to rotate;

[0053] S5. When it is necessary to measure the side of the part to be measured, the two clamping blocks are rotated 90 degrees at the same time so that the side of the part to be measured faces upwards;

[0054] S6. The scanner measures the side surface of the part to be measured.

[0055] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0056] 1. By setting two clamping blocks, and the two clamping blocks are respectively set at the diagonal positions of the lifting plate, when the parts to be tested need to be inspected, the parts to be tested can be clamped by the clamping blocks to prevent the parts to be tested from being displaced when being measured by the scanner, thereby ensuring the accuracy of the measurement results.

[0057] 2. By setting up a lifting plate and a movable sliding seat, when it is necessary to place and measure the parts to be measured, the position of the sliding seat can be moved. When it is moved to a position away from the support column, it is convenient to place the parts to be measured. When it is moved close to the support column, the scanner can scan and measure the parts to be measured.

[0058] 3. By rotating the two clamping blocks synchronously, and because the clamping blocks clamp the part to be measured, the angle of the part to be measured can be rotated so that the side of the part to be measured can be recognized by the scanner.

[0059] 4. By setting a liftable rotating plate, and generating negative pressure on the top of the rotating plate, when the part to be tested is placed on the rotating plate, the part to be tested can be adsorbed, and because the rotating plate moves upward a certain distance, it is convenient for the two clamping blocks to clamp the part to be tested. Compared with the prior art of clamping on a plane, it has a better effect when clamping thinner parts.

[0060] Other features and advantages of the present invention will be described in the following description, and part of them will become obvious from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0062] Figure 1 It is a three-dimensional diagram of the measurement state of the present invention;

[0063] Figure 2 A three-dimensional diagram of the state of placing the part to be tested in the present invention;

[0064] Figure 3 It is a structural diagram of the base and the sliding seat of the present invention;

[0065] Figure 4 A three-dimensional diagram of a sliding seat of the present invention;

[0066] Figure 5 It is a cross-sectional view of the present invention;

[0067] Figure 6 For the present invention Figure 5 Enlarged view of point A in the middle;

[0068] Figure 7 is a three-dimensional diagram of the rotating plate of the present invention;

[0069] Figure 8 This is a schematic diagram of the changing state of the lifting plate of the present invention;

[0070] Fig. 9 A three-dimensional diagram of the lifting plate of the present invention;

[0071] Fig.10 It is a partial stereogram of the clamping block of the present invention;

[0072] Fig.11 It is a stereoscopic view of the clamping block and the high-pressure pump of the present invention.

[0073] The reference numerals are as follows:

[0074] 101, base; 102, support column; 103, support foot; 104, sliding seat; 105, slide rail; 106, lifting plate; 107, sliding sleeve; 108, rack; 109, first motor; 110, first gear; 111, scanner; 112, through groove; 113, limit slide groove; 114, limit slider; 115, telescopic member; 116, groove; 200, part to be tested; 301, clamping block; 302, sliding sleeve; 303, sliding cavity; 304, sealing column; 305, gas injection pipe; 306, pressure relief valve; 307, 07, second gear; 308, lifting block; 309, electric telescopic rod; 310, third gear; 311, fourth gear; 312, second motor; 313, negative pressure tube; 314, high pressure pump; 315, rotating plate; 316, rotating groove; 317, sliding groove; 318, connecting hole; 319, negative pressure channel; 320, air pump; 321, positive pressure channel; 322, exhaust channel; 323, third motor; 324, limit column; 325, sealing ring; 326, driving column; 327, driving sleeve; 328, sliding frame. DETAILED DESCRIPTION

[0075] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention and are used to explain the principles of the present invention together with the embodiments of the present invention.

[0076] Embodiment 1, as Figure 1 , Figure 2 As shown, this embodiment provides an auxiliary positioning device for a two-dimensional image measuring instrument, comprising:

[0077] A base 101, four supporting legs 103 are fixedly installed at the bottom of the base 101, and suction cups are provided at the bottom of the four supporting legs 103, so that the supporting legs 103 and the base 101 can be stably installed on the ground or a workbench through the suction cups;

[0078] A support column 102, the support column 102 is fixedly connected to one end of the base 101;

[0079] Scanner 111, the scanner 111 is fixedly mounted on the top of the support column 102, and the scanning end of the scanner 111 faces directly downward;

[0080] like Figure 3 , Figure 4The sliding seat 104 shown is slidably mounted on the upper part of the base 101, and the two ends of the base 101 are fixedly connected with the slide rails 105, and the two ends of the slide rails 105 extend to the front and rear ends of the base 101. The bottom of the sliding seat 104 is fixedly connected with the slide sleeve 107, and the slide sleeve 107 is slidably connected with the slide rail 105. When the sliding seat 104 slides to the extreme position toward the support column 102, the middle part of the sliding seat 104 is directly below the scanner 111, so that the part 200 to be measured on the sliding seat 104 is scanned by the scanner 111, thereby realizing the measurement of the part 200 to be measured;

[0081] The rack 108 is fixedly connected to the bottom of the sliding sleeve 107 at one end of the sliding seat 104;

[0082] A first motor 109 is fixedly mounted on one end of the base 101 , and the first motor 109 is mounted below the rack 108 ;

[0083] The first gear 110 is fixedly connected to the output end of the first motor 109. The first gear 110 is meshed with the rack 108. When the first motor 109 is started, the first gear 110 can be driven to rotate, so that the first gear 110 drives the rack 108 to translate, thereby driving the sliding seat 104 to move along the direction of the slide rail 105, so as to facilitate the placement of the part 200 to be measured and move the part 200 to the bottom of the scanner 111 for two-dimensional image measurement and recognition. Figure 1 is a state diagram when the sliding seat is under the scanner 111, Figure 2 It is a state diagram when the sliding seat is away from the bottom of the scanner 111;

[0084] A groove 116, which is provided at one end of the base 101. When the sliding seat 104 slides to the position directly below the scanner 111, the groove 116 corresponds to the position of the sliding seat 104;

[0085] The lifting plate 106 is arranged in the middle of the sliding seat 104. A through slot 112 corresponding to the lifting plate 106 is opened in the middle of the sliding seat 104. The through slot 112 corresponds to the shape and size of the lifting plate 106. The part 200 to be tested is placed above the lifting plate 106.

[0086] like Figure 5 The telescopic member 115 shown is installed at both ends of the lifting plate 106, and is used to drive the lifting plate 106 to move up and down along the vertical direction of the sliding seat 104. The two ends of the lifting plate are fixedly connected to the limit slider 114, and the inner wall of the groove 116 is provided with a limit slide groove 113. The limit slider 114 is slidably connected with the limit slide groove 113. The upper and lower ends of the telescopic member 115 are respectively connected to the inner wall top of the limit slide groove 113 and the top of the limit slider 114;

[0087] It should be noted that the telescopic member 115 can be a pneumatic telescopic rod, a hydraulic telescopic rod or a linear motor, so as to achieve the effect of driving the lifting plate 106 to move up and down;

[0088] In the above scheme, the lifting plate 106 is first lowered to the lowest point, and then the sliding seat 104 is slid to the top of the base 101 away from the end of the support column 102, and then the part to be measured 200 is placed on the top of the lifting plate 106, and then the sliding seat 104 is slid to the top of the base 101 close to the end of the support column 102, so that the part to be measured 200 is directly under the scanner 111, and then the lifting plate 106 is lowered to the lowest point, so that the surrounding of the groove 116 protects the part to be measured 200 on the top of the lifting plate 106 to avoid being touched by objects and affected by wind direction, which affects the measurement results.

[0089] like Figure 6 , Figure 7 As shown, an auxiliary positioning device for a two-dimensional image measuring instrument also includes:

[0090] The rotating plate 315 is installed in the middle of the top of the lifting plate 106. The rotating plate 315 can rotate in the middle of the top of the lifting plate 106. A connecting hole 318 is opened around the rotating plate 315. The two ends of the connecting hole 318 pass through the top of the rotating plate 315 and the side of the rotating plate 315 respectively.

[0091] A rotating groove 316 is provided in the middle of the top of the lifting plate 106. The rotating plate 315 rotates in the rotating groove 316. There is a gap between the periphery of the rotating plate 315 and the inner wall of the rotating groove 316.

[0092] A negative pressure channel 319 is provided on the inner wall of the rotating groove 316, and the other end of the negative pressure channel 319 penetrates to the bottom of the lifting plate 106;

[0093] The air pump 320 is fixedly mounted on the bottom of the lifting plate 106;

[0094] A positive pressure channel 321 is provided at the bottom of the inner wall of the rotating groove 316, and the other end of the positive pressure channel 321 penetrates to the bottom of the lifting plate 106;

[0095] The exhaust channel 322 is provided at the bottom of the inner wall of the rotating groove 316, and the other end of the exhaust channel 322 penetrates to the bottom of the lifting plate 106. The inner diameter of the exhaust channel 322 is smaller than the inner diameter of the positive pressure channel 321;

[0096] The third motor 323 is fixedly mounted at the bottom of the lifting plate 106. The top output shaft of the third motor 323 is connected to a driving sleeve 327. The bottom of the rotating plate 315 is fixedly connected to a driving column 326. The driving column 326 matches the shape of the driving sleeve 327. The outer wall of the driving column 326 and the inner wall of the driving sleeve 327 are provided with a limit structure that can be interlocked at the corresponding position, so that the driving column 326 cannot rotate relative to the driving sleeve 327, and the two can only rotate synchronously;

[0097] The sealing ring 325 is fixedly connected to the bottom of the rotating plate 315. The periphery of the sealing ring 325 is sealingly and slidably connected to the inner wall of the rotating groove 316. An annular sealing cavity is formed between the top of the sealing ring 325, the side of the rotating plate 315 and the inner wall of the rotating groove 316. The communicating hole 318 is connected to the sealing cavity, and one end of the negative pressure channel 319 is connected to the sealing cavity.

[0098] The limiting column 324 is fixedly connected to the inner wall of the rotating groove 316, and the limiting column 324 is arranged just above the sealing ring 325;

[0099] In the above scheme, the negative pressure port of the air pump 320 is connected to the negative pressure channel 319, and the positive pressure port of the air pump 320 is connected to the positive pressure channel 321. When the air pump 320 is started, negative pressure is generated in the negative pressure channel 319, and positive pressure is generated in the positive pressure channel 321.

[0100] When negative pressure is generated in the negative pressure channel 319, negative pressure is also generated in the sealing cavity and the communicating hole 318, so that the part to be tested 200 placed on the top of the rotating plate 315 can be adsorbed on the top of the rotating plate 315 under the action of negative pressure;

[0101] When positive pressure is generated in the positive pressure channel 321, the rotating plate 315 is pushed upward by the gas squeezing action, and the rising range of the rotating plate 315 is limited to a certain height by the limiting pillar 324, thereby preventing the rotating plate 315 from being separated from the rotating groove 316, and the excess gas pressure can be discharged by setting the exhaust channel 322;

[0102] Through the above scheme, the rotating plate 315 is first lifted up, thereby driving the part to be tested 200 to move upward, so that a gap is formed between the bottom of the part to be tested 200 and the top surface of the lifting plate 106, and then the rotating plate 315 is sucked by the negative pressure generated by the rotating plate 315, and finally the rotating plate 315 is driven to rotate by the third motor 323, thereby driving the part to be tested 200 to rotate, and rotating the part to be tested 200 to a specific angle.

[0103] like Figure 8 , Fig. 9 , Fig.10 , Fig.11As shown, an auxiliary positioning device for a two-dimensional image measuring instrument also includes:

[0104] A clamping block 301 is installed on the top of the lifting plate 106, and there are two clamping blocks 301. The two clamping blocks 301 are symmetrically arranged at two diagonal positions of the lifting plate 106. When the two clamping blocks 301 are close to each other, the two corners of the part 200 to be tested can be clamped. The shape of the clamping block 301 is V-shaped, and the part 200 to be tested can be clamped by two diagonally arranged clamping blocks 301;

[0105] A sliding groove 317 is provided on the top of the lifting plate 106, and the clamping block 301 slides inside the sliding groove 317;

[0106] It should be noted that when the two clamping blocks 301 clamp the part to be tested 200, the part to be tested 200 needs to be rotated to a specific angle first, so that the two corners of the part to be tested 200 can correspond to the positions of the two clamping blocks 301 respectively, and then the part to be tested is clamped by bringing the two clamping blocks 301 closer to each other;

[0107] As a method of driving the clamping block 301, the following components may be included:

[0108] The sliding sleeve 302 is fixedly connected to one end of the clamping block 301, and a sliding cavity 303 is provided inside the sliding sleeve 302;

[0109] The sealing column 304 is sealingly and slidably installed inside the sliding sleeve 302. When air pressure is generated in the sliding chamber 303, the sliding sleeve 302 and the sealing column 304 can be driven to slide relative to each other under the drive of the air pressure.

[0110] An air injection pipe 305 is connected to one end of the sliding sleeve 302, and the interior of the air injection pipe 305 is communicated with the interior of the sliding cavity 303;

[0111] A high-pressure pump 314 is installed on the top of the sliding seat 104. The negative pressure end of the high-pressure pump 314 is connected to a negative pressure tube 313. The other end of the negative pressure tube 313 is fixedly connected to the top of the gas injection tube 305. The interior of the negative pressure tube 313 is connected to the interior of the gas injection tube 305. When the high-pressure pump 314 is working, gas can be injected into the sliding cavity 303 to generate high pressure inside the sliding cavity 303. The high pressure can cause the sliding sleeve 302 and the sealing column 304 to move away from each other, so that the two clamping blocks 301 are close to each other to clamp the part 200 to be measured, thereby preventing the part 200 to be measured from deviating during the measurement process and affecting the measurement result.

[0112] A lifting block 308 is fixedly connected to an end of the sealing column 304 away from the sliding sleeve 302;

[0113] There are two sliding frames 328, which are respectively installed at one end of the two clamping blocks 301, and the bottoms of the two sliding frames 328 are fixedly connected to the two diagonal positions of the lifting plate 106, and the lifting block 308 is slidably connected to the sliding frames 328;

[0114] The electric telescopic rod 309 has its upper and lower ends connected to the top of the inner wall of the sliding frame 328 and the top of the lifting block 308 respectively, and the electric telescopic rod 309 can drive the lifting block 308 to slide up and down in the sliding frame 328;

[0115] The pressure relief valve 306 is fixedly connected to the outer wall of the sliding sleeve 302. The pressure relief valve 306 is adjustable. Through the adjustable pressure relief valve 306, the air pressure inside the sliding cavity 303 can be adjusted according to the clamping force required by the parts 200 to be tested of different specifications, so that the clamping block 301 can adjust the pressure applied to the parts 200 to be tested, thereby preventing the clamping block 301 from squeezing and deforming the parts 200 to be tested;

[0116] The second gear 307 is connected to the middle of the sealing column 304;

[0117] A third gear 310 is rotatably connected to the side wall of the sliding sleeve 302;

[0118] The second motor 312 is fixedly mounted on the outer wall of the sliding sleeve 302;

[0119] A fourth gear 311 is fixedly connected to the end of the output shaft of the second motor 312, the fourth gear 311 is meshed with the third gear 310, and the third gear 310 is meshed with the second gear 307;

[0120] In the above scheme, when the second motor 312 is started, the fourth gear 311 starts to rotate. Since the fourth gear 311 is meshed with the third gear 310, and the third gear 310 is meshed with the second gear 307, when the second motor 312 is started, the second motor 312 and the sliding sleeve 302 can rotate around the sealing column 304, so that the entire sliding sleeve 302 and the clamping block 301 rotate, thereby driving the part to be measured 200 to rotate, so that the scanner 111 can measure the size of the part to be measured 200 in another direction.

[0121] Embodiment 2: The technical solution of this embodiment is different from that of Embodiment 1 in that this embodiment provides an auxiliary positioning method for a two-dimensional image measuring instrument, comprising the following steps:

[0122] S1, slide the sliding seat 104 to the top of the base 101 away from the end of the support column 102, and then lift the lifting plate 106;

[0123] S2, placing the part 200 to be tested on the lifting plate 106 in S1;

[0124] S3, the scanner 111 measures the front side of the part 200 to be measured;

[0125] S4, the two clamping blocks 301 are moved closer to each other to clamp the part 200 to be tested, and the two clamping blocks 301 are moved upward to leave enough space for the part 200 to be tested to rotate;

[0126] S5. When it is necessary to measure the side of the part 200 to be measured, the two clamping blocks 301 are simultaneously rotated 90 degrees so that the side of the part 200 to be measured faces upward;

[0127] S6. The scanner 111 measures the side surface of the part 200 to be measured.

[0128] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0129] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the embodiments of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0130] In the embodiments of the present application, the devices or elements referred to or implied must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise precisely and specifically specified.

[0131] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An auxiliary positioning device for a two-dimensional image measuring instrument, comprising a base (101), a support column (102) and a scanner (111), wherein the scanner (111) is used to scan and measure a part to be measured (200), characterized in that: Also includes: A sliding seat (104), the sliding seat (104) being slidably mounted on an upper portion of the base (101); A lifting plate (106), wherein the lifting plate (106) is arranged in the middle of the sliding seat (104); A clamping block (301) is installed on the top of the lifting plate (106), and there are two clamping blocks (301). The two clamping blocks (301) are symmetrically arranged at two diagonal positions of the lifting plate (106). When the two clamping blocks (301) are close to each other, they can clamp the two corners of the part to be tested (2); The two clamping blocks (301) can achieve synchronous rising, mutual approach and mutual distance, and the two clamping blocks (301) can drive the part to be tested (200) to rotate.

2. The auxiliary positioning device for a two-dimensional image measuring instrument according to claim 1, characterized in that: The two ends of the base (101) are fixedly connected with slide rails (105), and the two ends of the slide rails (105) extend to the front and rear ends of the base (101). The bottom of the sliding seat (104) is fixedly connected with a sliding sleeve (107), and the sliding sleeve (107) is slidably connected to the slide rail (105). When the sliding seat (104) slides to the extreme position toward the support column (102), the middle of the sliding seat (104) is located directly below the scanner (111), so that the part (200) to be measured on the sliding seat (104) is scanned by the scanner (111), thereby realizing the measurement of the part (200) to be measured.

3. The auxiliary positioning device for a two-dimensional image measuring instrument according to claim 2, characterized in that: Also includes: A rack (108) is fixedly connected to the bottom of the sliding sleeve (107) at one end of the sliding seat (104); A first motor (109) is fixedly mounted on one end of the base (101), and the first motor (109) is mounted below the rack (108); A first gear (110) is fixedly connected to the output end of the first motor (109), the first gear (110) is meshed with the rack (108), and when the first motor (109) is started, it can drive the first gear (110) to rotate, so that the first gear (110) drives the rack (108) to translate, thereby driving the sliding seat (104) to move along the direction of the slide rail (105); A groove (116), wherein the groove (116) is opened at one end of the base (101), and when the sliding seat (104) slides to the position directly below the scanner (111), the groove (116) corresponds to the position of the sliding seat (104).

4. The auxiliary positioning device for a two-dimensional image measuring instrument according to claim 3, characterized in that: Also includes: A through slot (112) corresponding to the lifting plate (106) is provided in the middle of the sliding seat (104); the through slot (112) corresponds to the shape and size of the lifting plate (106); the part to be tested (200) is placed above the lifting plate (106); The telescopic member (115) is installed at both ends of the lifting plate (106) and is used to drive the lifting plate (106) to move up and down along the vertical direction of the sliding seat (104). The two ends of the lifting plate are fixedly connected to the limit slider (114). The inner wall of the groove (116) is provided with a limit slide groove (113). The limit slide groove (114) is slidably connected to the limit slide groove (113). The upper and lower ends of the telescopic member (115) are respectively connected to the top of the inner wall of the limit slide groove (113) and the top of the limit slider (114).

5. The auxiliary positioning device for a two-dimensional image measuring instrument according to claim 1, characterized in that: Also includes: A rotating plate (315) is installed in the middle of the top of the lifting plate (106). The rotating plate (315) can rotate in the middle of the top of the lifting plate (106). A connecting hole (318) is opened around the rotating plate (315). Two ends of the connecting hole (318) respectively penetrate the top of the rotating plate (315) and the side of the rotating plate (315); The rotating groove (316) is provided at the middle of the top of the lifting plate (106), the rotating plate (315) rotates in the rotating groove (316), and there is a gap between the periphery of the rotating plate (315) and the inner wall of the rotating groove (316).

6. The auxiliary positioning device for a two-dimensional image measuring instrument according to claim 5, characterized in that: Also includes: A negative pressure channel (319) is provided on the inner wall of the rotating groove (316), and the other end of the negative pressure channel (319) penetrates to the bottom of the lifting plate (106); An air pump (320) is fixedly mounted on the bottom of the lifting plate (106); A positive pressure channel (321) is provided at the bottom of the inner wall of the rotating groove (316), and the other end of the positive pressure channel (321) penetrates to the bottom of the lifting plate (106); An exhaust channel (322) is provided at the bottom of the inner wall of the rotating groove (316), the other end of the exhaust channel (322) penetrates to the bottom of the lifting plate (106), and the inner diameter of the exhaust channel (322) is smaller than the inner diameter of the positive pressure channel (321); A third motor (323), the third motor (323) is fixedly mounted at the bottom of the lifting plate (106); the top output shaft of the third motor (323) is connected to a driving sleeve (327); the bottom of the rotating plate (315) is fixedly connected to a driving column (326); the driving column (326) matches the shape of the driving sleeve (327); and the outer wall of the driving column (326) and the inner wall of the driving sleeve (327) are provided with mutually interlocking limiting structures at corresponding positions.

7. The auxiliary positioning device for a two-dimensional image measuring instrument according to claim 6, characterized in that: Also includes: A sealing ring (325), the sealing ring (325) is fixedly connected to the bottom of the rotating plate (315), the periphery of the sealing ring (325) is sealingly slidably connected to the inner wall of the rotating groove (316), an annular sealing cavity is formed between the top of the sealing ring (325), the side of the rotating plate (315) and the inner wall of the rotating groove (316), the communicating hole (318) is connected to the sealing cavity, and one end of the negative pressure channel (319) is connected to the sealing cavity; A limiting column (324) is fixedly connected to the inner wall of the rotating groove (316), and the limiting column (324) is arranged just above the sealing ring (325); The negative pressure port of the air pump (320) is connected to the negative pressure channel (319), and the positive pressure port of the air pump (320) is connected to the positive pressure channel (321). When the air pump (320) is started, negative pressure is generated in the negative pressure channel (319) and positive pressure is generated in the positive pressure channel (321).

8. The auxiliary positioning device for a two-dimensional image measuring instrument according to claim 1, characterized in that: A sliding sleeve (302) is fixedly connected to one end of the clamping block (301), and a sliding cavity (303) is provided inside the sliding sleeve (302); A sealing column (304), wherein the sealing column (304) is sealingly slidably mounted inside the sliding sleeve (302), and when air pressure is generated in the sliding chamber (303), the sliding sleeve (302) and the sealing column (304) can be driven to slide relative to each other under the influence of the air pressure; An air injection pipe (305) connected to one end of the sliding sleeve (302), the interior of the air injection pipe (305) being in communication with the interior of the sliding cavity (303); A high-pressure pump (314), the high-pressure pump (314) being installed on the top of the sliding seat (104), the negative pressure end of the high-pressure pump (314) being connected to a negative pressure pipe (313), and the other end of the negative pressure pipe (313) being fixedly connected to the top of the gas injection pipe (305); A lifting block (308) is fixedly connected to an end of the sealing column (304) away from the sliding sleeve (302); There are two sliding frames (328), which are respectively installed at one end of the two clamping blocks (301), and the bottoms of the two sliding frames (328) are fixedly connected to the two diagonal positions of the lifting plate (106), and the lifting block (308) is slidably connected to the sliding frames (328); The electric telescopic rod (309) has upper and lower ends connected to the top of the inner wall of the sliding frame (328) and the top of the lifting block (308) respectively, and the electric telescopic rod (309) can drive the lifting block (308) to slide up and down in the sliding frame (328).

9. The auxiliary positioning device for a two-dimensional image measuring instrument according to claim 8, characterized in that: Also includes: A pressure relief valve (306), wherein the pressure relief valve (306) is fixedly connected to the outer wall of the sliding sleeve (302); A second gear (307) connected to the middle portion of the sealing column (304); A third gear (310) rotatably connected to the side wall of the sliding sleeve (302); A second motor (312) is fixedly mounted on the outer wall of the sliding sleeve (302); The fourth gear (311) is fixedly connected to the end of the output shaft of the second motor (312); the fourth gear (311) is meshed with the third gear (310); and the third gear (310) is meshed with the second gear (307).

10. An auxiliary positioning method for a two-dimensional image measuring instrument, using an auxiliary positioning device for a two-dimensional image measuring instrument according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1, slide the sliding seat (104) to the top of the base (101) away from the end of the support column (102), and then raise the lifting plate (106); S2, placing the part to be tested (200) on the lifting plate (106) in S1; S3, the scanner (111) measures the front side of the part to be measured (200); S4, the two clamping blocks (301) are moved closer to each other to clamp the part to be tested (200), and the two clamping blocks (301) are moved upward to leave enough space for the part to be tested (200) to rotate; S5. When it is necessary to measure the side surface of the part (200) to be measured, the two clamping blocks (301) are simultaneously rotated 90 degrees so that the side surface of the part (200) to be measured faces upward; S6. The scanner (111) measures the side surface of the part to be measured (200).

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