Image measuring instrument auxiliary clamp for part detection

Abstract

The invention discloses an image measuring instrument auxiliary clamp for part detection, relates to the field of part measuring clamps, and solves the problem that when an existing image measuring instrument auxiliary clamp for part detection is used, it is difficult to adjust the levelness of part placement according to the needed top face position. Comprising a machine body, a calibration mechanism, a supporting mechanism and a clamping mechanism, the calibration mechanism comprises a lifting frame and a positioning rod, and the supporting mechanism comprises a mounting plate, a fixing pipe, a supporting rod and an air bag. The bottom of the part is jacked up through air inflation of the air bag, the bottom ends of the positioning rods conduct positioning abutting on the positions needing to be located on the same plane, the top face of the part abuts against the bottom faces of the multiple sets of positioning rods, calibration of the plane needing to be measured is achieved, and the two sides of the adjusted part are clamped and fixed through the clamping mechanism.

Description

Technical Field

[0001] The invention relates to the technical field of part measuring fixtures, in particular to an auxiliary fixture of an image measuring instrument used for part detection. Background Art

[0002] With the advancement of science and technology, the use of visual image detection is becoming more and more common in automated production. Visual image detection directly uses machines instead of human eyes to make measurements and judgments, such as image measuring instruments, which have higher measurement accuracy and effectively reduce detection costs. Image measuring instruments are based on CCD digital images and rely on computer screen measurement technology and powerful software capabilities of spatial geometric operations. It can quickly read the displacement value of the optical ruler, obtain the desired result by shooting the top view of the part, and generate graphics on the screen for the operator to compare the image and the image, so as to intuitively distinguish possible deviations in the measurement results.

[0003] The existing image measuring instruments for parts inspection generally place the parts to be inspected directly on the measuring table during measurement, and perform image measurement by moving the camera on the top. Since the surface of the measuring table is relatively flat, but the bottom shapes of the parts are different, the parts are prone to tilt after being placed directly on the measuring table, affecting the accuracy of image measurement. Some existing auxiliary fixtures can generally only clamp and fix the position of the parts, and it is difficult to adjust the horizontal degree of the surface of the parts. As a result, after clamping, the parts may still be in a tilted state. At this time, the top view of the parts is directly photographed through the camera on the top, and the dimensional measurement data obtained from the captured image will have certain errors. To this end, we propose an auxiliary fixture for image measuring instruments for parts inspection. Summary of the invention

[0004] The object of the present invention is to provide an auxiliary fixture of an image measuring instrument for part inspection, which is convenient for adjusting and fixing the required surface of a part when placing the part, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an auxiliary fixture of an image measuring instrument for part inspection, comprising a machine body, a calibration mechanism, a supporting mechanism and a clamping mechanism, wherein two sets of fixed plates are fixedly connected to the machine body, a sliding frame capable of being controlled to slide horizontally is provided on the machine body, a measuring instrument capable of being adjusted to slide horizontally is provided on the sliding frame, the calibration mechanism comprises a lifting frame slidably connected to the fixed plates on both sides in a vertical direction, a plurality of positioning rods are provided on the lifting frame, which are used to position and contact positions that need to be in the same plane through the bottom ends of the positioning rods, so as to realize calibration of the required measuring plane, the supporting mechanism comprises a lifting frame slidably connected to the top surface of the machine body in a horizontal direction A mounting plate is connected, and a plurality of groups of fixing tubes are fixedly connected to the mounting plate, and support rods are respectively slidably connected in the plurality of fixing tubes along the vertical direction. A plurality of groups of air bags are fixedly connected to the mounting plate, and the plurality of groups of air bags are respectively located between adjacent fixing tubes, and are used for placing a part to be tested on the upper end of the support rod for preliminary support. After the positioning rod is moved to the desired position, the bottom of the part is lifted up by inflating the air bags, so that the top surface of the part contacts the bottom surfaces of the plurality of groups of positioning rods, thereby realizing the leveling function. The clamping mechanism is installed on the lifting frame, and is used for clamping and fixing both sides of the adjusted part, so as to facilitate the adjustment and fixation of the required surfaces of the part when placing the part.

[0006] Preferably, the supporting mechanism also includes sliding blocks fixedly mounted on both sides of the mounting plate, the sliding blocks are fixedly connected to an inflator, the inflator is connected to a delivery pipe, a plurality of groups of airbags are connected to the delivery pipe, a control member is provided in the fixed pipe for limiting the position of the support rod in the required area after it moves down by pressing, so as to avoid continuously lifting the raised position of the bottom of the part, so as to facilitate initial support by placing the part to be tested on the upper end of the support rod, and after the positioning rod moves to the required position, the bottom of the part is lifted up by inflating the airbag, so that the top surface of the part contacts the bottom surface of the plurality of groups of positioning rods, thereby realizing the leveling function.

[0007] The top surface of the lifting block is fixedly connected with a plurality of limit rods that can be plugged into the limit grooves in a vertical direction, and the side surface of the support rod is fixedly connected with a pushing block that is slidably connected with the limit grooves in a vertical direction. The lifting block is fixedly connected with a lifting ring, and the upper side of the lifting ring is evenly provided with a plurality of first oblique tooth grooves that can slide and fit with the bottom surface of the pushing block, and the bottom of the limit tube is evenly provided with a plurality of second oblique tooth grooves that can slide and fit with the top surface of the limit rod, and the top surface of the limit rod and the bottom surface of the pushing block are both inclined surface designs, so that the support rod in the required area can be moved down by pressing to limit the position, so as to avoid continuously lifting the raised position at the bottom of the part.

[0008] Preferably, the control component also includes a first spring fixedly installed on the upper side of the lifting block, and the bottom of the fixing tube is fixedly connected to a second spring, and the top surface of the second spring is rotatably fitted with the bottom surface of the lifting block. The mounting plate is provided with a driving component for synchronously controlling the support rod to move downward after the parts are fixed and clamped, and moving the mounting plate away from the bottom of the parts, so as to support the position of the lifting block and the support rod.

[0009] Preferably, the driving member includes a first tension spring fixedly mounted on the sliding block, one end of the first tension spring is fixedly connected to the machine body, a sliding frame is slidably connected to the mounting plate, a plurality of connecting rods are evenly fixedly connected to the sliding frame, a plurality of connecting ropes are evenly fixedly connected to the sides of the connecting rods, the connecting ropes pass through the mounting plate and the fixed tube, and are slidably connected to the mounting plate and the inner wall of the fixed tube, one end of the connecting rope away from the connecting rod is rotatably connected to the bottom surface of the lifting block via a rotating buckle, a second tension spring fixedly connected to the connecting rod is fixedly connected to the mounting plate, the elastic force of the first tension spring is greater than the elastic force of the second tension spring, so that after the parts are fixed and clamped, the support rod can be synchronously controlled to move downward and the mounting plate can be moved away from the bottom of the parts.

[0010] Preferably, the calibration mechanism also includes multiple groups of fixed cylinders fixedly mounted on the lifting frame, a lifting column is slidably connected in the fixed cylinder along the vertical direction, the bottom of the lifting column is fixedly connected to a third tension spring fixedly connected to the fixed cylinder, the top surface of the lifting column is rotatably connected to a telescopic sleeve rod, and the positioning rod is fixedly mounted on the lower side of one end of the telescopic sleeve rod to facilitate adjustment of the position of the positioning rod.

[0011] Preferably, the calibration mechanism also includes a first electric telescopic rod fixedly mounted on the fixed plate, the telescopic end of the first electric telescopic rod being fixedly connected to the bottom surface of the lifting frame, and the top surface of the fixed cylinder being rotatably connected to a limit block for limiting the lifting column, so as to facilitate the adjustment of the height of the lifting frame and limit the lifting column by the limit block.

[0012] Preferably, the clamping mechanism includes a plurality of groups of second electric telescopic rods fixedly mounted on the lifting frame, the telescopic ends of the second electric telescopic rods are fixedly connected to a guide frame, a guide rod is slidably connected in a vertical direction inside the guide frame, a clamping block for clamping and fixing parts is fixedly connected to the side surface of the bottom end of the guide rod, and a fixing nut for limiting the position of the guide rod is provided on the guide frame, so as to facilitate clamping and fixing both sides of the part.

[0013] Preferably, an elastic card block is provided on the machine body, and a card slot capable of being carded with one end of the elastic card block is provided on the side of the sliding block, so as to facilitate preliminary limiting of the position of the mounting plate after the mounting plate is pulled out.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The invention provides an auxiliary fixture of an image measuring instrument for part inspection, which solves the problem that it is difficult to adjust the horizontal degree of part placement according to the required top surface position when using the auxiliary fixture of the existing image measuring instrument for part inspection, resulting in inaccurate measurement results. The part to be measured is placed on the upper end of a support rod for preliminary support. After the positioning rod is moved to the required position, the bottom of the part is lifted up by inflating an airbag, and the bottom end of the positioning rod is positioned and abutted against the position that needs to be in the same plane, so that the top surface of the part is abutted against the bottom surfaces of multiple groups of positioning rods, so as to achieve calibration of the required measurement plane, and the two sides of the adjusted part are clamped and fixed by a clamping mechanism. The device has a simple structure and is easy to use. It can quickly place and support parts with different bottom surfaces, and by positioning and supporting the top surface that needs to be leveled, the part is finally lifted up so that the positioning point is abutted, so that the position of the positioning point is level, and image measurement of the required top surface is achieved, and the measurement result is more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the parts of the present invention in a positioning and fixing state; Figure 3 It is a schematic diagram of the local structure of the calibration mechanism of the present invention; Figure 4 for Figure 3 A magnified image of the middle A area; Figure 5It is a schematic diagram of the partial structure of the clamping mechanism of the present invention; Figure 6 for Figure 5 Enlarged view of area B; Figure 7 It is a schematic diagram of the partial structure of the support mechanism of the present invention; Figure 8 It is a schematic diagram of the local structure of the driving member of the present invention; Fig. 9 It is a schematic diagram of the local structure of the control component of the present invention; Fig.10 for Fig. 9 Enlarged view of area C in the middle; Fig.11 It is an exploded view of the local structure of the control part of the present invention; Fig.12 for Fig.11 Enlarged view of area D in the middle.

[0016] In the figure: 1-body; 2-fixed plate; 3-sliding frame; 4-measuring instrument; 5-calibration mechanism; 6-lifting frame; 7-positioning rod; 8-support mechanism; 9-mounting plate; 10-fixed tube; 11-support rod; 12-air bag; 13-clamping mechanism; 14-sliding block; 15-inflator; 16-transmission pipe; 17-control part; 18-limiting tube; 19-limiting groove; 20-lifting block; 21-limiting rod; 22-pushing block; 23-lifting ring; 24-first oblique tooth groove; 25-second oblique tooth groove Tooth groove; 26-first spring; 27-second spring; 28-driving member; 29-first tension spring; 30-sliding frame; 31-connecting rod; 32-connecting rope; 33-second tension spring; 34-fixing cylinder; 35-lifting column; 36-third tension spring; 37-telescopic sleeve; 38-first electric telescopic rod; 39-limiting block; 40-second electric telescopic rod; 41-guide frame; 42-guide rod; 43-clamping block; 44-fixing nut; 45-elastic clamping block; 46-clamping groove; 47-parts. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example 1

[0018] See also Figure 1-Figure 12The image measuring instrument auxiliary fixture for part inspection shown in the figure includes a body 1, a calibration mechanism 5, a support mechanism 8 and a clamping mechanism 13. Two sets of fixed plates 2 are fixedly connected to the body 1. A sliding frame 3 that can be controlled to slide horizontally is provided on the body 1. A measuring instrument 4 that can slide horizontally and adjust is provided on the sliding frame 3. The calibration mechanism 5 includes a lifting frame 6 that is slidably connected to the fixed plates 2 on both sides in a vertical direction. A plurality of positioning rods 7 are provided on the lifting frame 6, which are used to locate and contact the positions that need to be in the same plane through the bottom ends of the positioning rods 7 to achieve calibration of the required measuring plane. The support mechanism 8 includes a lifting frame 6 that is slidably connected to the top surface of the body 1 in a horizontal direction. The mounting plate 9 has a plurality of fixed tubes 10 fixedly connected thereto, each of which is slidably connected to a support rod 11 in a vertical direction. The mounting plate 9 has a plurality of air bags 12 fixedly connected thereto, each of which is located between adjacent fixed tubes 10 and is used for placing a part 47 to be tested on the upper end of the support rod 11 for preliminary support. After the positioning rod 7 is moved to the desired position, the bottom of the part 47 is lifted up by inflating the air bags 12, so that the top surface of the part 47 contacts the bottom surface of the plurality of positioning rods 7, thereby realizing the leveling function. The clamping mechanism 13 is installed on the lifting frame 6, and is used for clamping and fixing the two sides of the adjusted part 47.

[0019] The supporting mechanism 8 also includes a sliding block 14 fixedly mounted on both sides of the mounting plate 9, to which an inflator 15 is fixedly connected, and a delivery pipe 16 is connected to the inflator 15, and multiple groups of airbags 12 are connected to the delivery pipe 16. A control component 17 is provided in the fixed tube 10 for limiting the position of the support rod 11 in the required area by pressing it downward to avoid continuously lifting the raised position at the bottom of the part 47.

[0020] The control member 17 includes a limit tube 18 fixedly installed in the fixed tube 10, and a plurality of limit grooves 19 are evenly arranged on the side of the limit tube 18. The outer wall of the support rod 11 is movably sleeved with the inner wall of the limit tube 18. A lifting block 20 is movably sleeved in the fixed tube 10. The top surface of the lifting block 20 is fixedly connected with a plurality of limit rods 21 that can be plugged into the limit grooves 19 in the vertical direction. A push block 22 that is slidably connected to the limit grooves 19 in the vertical direction is fixedly connected to the side of the support rod 11. A lifting block 20 is fixedly connected to the lifting block 20. Ring 23, the upper side of the lifting ring 23 is evenly provided with multiple groups of first oblique tooth grooves 24 that can slide and fit with the bottom surface of the pushing block 22, and the bottom of the limiting tube 18 is evenly provided with multiple groups of second oblique tooth grooves 25 that can slide and fit with the top surface of the limiting rod 21. The top surface of the limiting rod 21 and the bottom surface of the pushing block 22 are both inclined designs, similar to the principle of pressing a ballpoint pen, so that each time the support rod 11 is pressed to the bottom, the limiting and rebounding states will be intermittently realized. When it is not pressed to the bottom, the state before pressing is maintained.

[0021] The control member 17 also includes a first spring 26 fixedly installed on the upper side of the lifting block 20, and a second spring 27 is fixedly connected to the bottom of the fixed tube 10. The top surface of the second spring 27 is rotatably fitted with the bottom surface of the lifting block 20. The mounting plate 9 is provided with a driving member 28 for synchronously controlling the support rod 11 to move downward and moving the mounting plate 9 away from the bottom of the part 47 after the part 47 is fixedly clamped.

[0022] The driving member 28 includes a first tension spring 29 fixedly mounted on the sliding block 14, one end of the first tension spring 29 is fixedly connected to the body 1, a sliding frame 30 is slidably connected in the mounting plate 9, a plurality of connecting rods 31 are evenly fixedly connected in the sliding frame 30, a plurality of connecting ropes 32 are evenly fixedly connected to the sides of the connecting rods 31, the connecting ropes 32 penetrate the mounting plate 9 and the fixed tube 10, and are slidably connected to the inner walls of the mounting plate 9 and the fixed tube 10, one end of the connecting rope 32 away from the connecting rod 31 is rotatably connected to the bottom surface of the lifting block 20 through a rotating buckle, a second tension spring 33 fixedly connected to the connecting rod 31 is fixedly connected in the mounting plate 9, the elastic force of the first tension spring 29 is greater than the elastic force of the second tension spring 33, an elastic clamping block 45 is provided on the body 1, and a clamping groove 46 capable of being clamped with one end of the elastic clamping block 45 is provided on the side of the sliding block 14.

[0023] In this embodiment, the measuring surface of the part 47 to be measured is facing upwards and the bottom surface is placed on the support rod 11 downwards, and the part 47 is pushed downwards for a distance so that the raised position on the bottom surface of the part 47 pushes the support rod 11 at that location to the lowest point. The pushing block 22 on the side of the support rod 11 pushes the limiting rod 21 downwards out of the limiting groove 19, and the first oblique tooth groove 24 is pushed to rotate to a set angle through the inclined surface at the bottom of the pushing block 22. After the limiting rod 21 slides out of the limiting groove 19, it rotates with the lifting ring 23. As the part 47 moves upwards, the second spring 27 rebounds and pushes the lifting block 20 upwards. When the limit rod 21 is moved to the second bevel tooth groove 25 for limiting due to the rotation of a certain angle, the lifting block 20 cannot continue to push the support rod 11 to lift it up. The support rod 11 here is in a limited state. For the support rod 11 at a position where there is no protrusion on the bottom surface of the part 47, when the part 47 moves downward, the support rod 11 at this position cannot reach the bottom, so that the limit rod 21 has not been pushed out of the limit groove 19. After the part 47 is released, the support rod 11 here will be lifted up again by the lifting block 20 and the second spring 27, so as to achieve the purpose of automatically supporting the bottom of the part 47.

[0024] After the part 47 is placed, the position of the positioning rod 7 is adjusted so that the bottom of the positioning rod 7 is directly above the top surface of the plane to be measured. Then, the inflation and deflation machine 15 is started to inflate the conveying tube 16 and the airbag 12. The airbag 12 gradually expands from the bottom of the part 47 to lift the bottom of the part 47 as a whole, until the top surface to be measured of the part 47 is tightly in contact with the bottom end of the positioning rod 7. At this time, the surface to be measured is already in a horizontal state. The part 47 is clamped and fixed by the clamping mechanisms 13 on both sides. The mounting plate 9 and the support rod 11 can be pulled out from under the part 47 as a whole for subsequent measurement. By adjusting the horizontal position of the sliding frame 3 and the measuring instrument 4, the top view of the top surface to be measured is photographed. The precise size of the top surface can be obtained by analyzing the top view, thereby improving the measurement accuracy.

[0025] When moving out the mounting plate 9, it is necessary to first evacuate the delivery pipe 16 through the inflator 15 to shrink the airbag 12 and release the support for the bottom of the part 47, and then pull the sliding frame 30, which drives the connecting rod 31 to slide horizontally in the mounting plate 9. At this time, since the tension of the first tension spring 29 is much greater than the tension of the second tension spring 33, the sliding frame 30 and the connecting rod 31 will move first, and the connecting rod 31 will drive the connecting rope 32 to pull the lifting block 20 down, thereby driving all the support rods 11 to move down to the bottom position together, and the top of the support rod 11 will release the support for the part 47 is supported. At this time, the sliding frame 30 can no longer slide out relative to the mounting plate 9. Thereafter, the sliding frame 30 is continued to be pulled to drive the mounting plate 9 to slide away from the bottom position of the part 47 in the horizontal direction. The first tension spring 29 is stretched until the sliding block 14 reaches the position of the elastic clamping block 45. At this time, the clamping groove 46 is clamped by the elastic clamping block 45 to complete the fixation of the mounting plate 9. Thereafter, the image measurement of the part 47 can ensure that the bottom of the part 47 is in a relatively unobstructed state, thereby avoiding interference with the image measurement of the part 47 caused by a large number of support rods 11 at the bottom.

[0026] After the measurement is completed, the elastic blocks 45 on both sides can be pushed away to release the limit on the card slot 46, and the mounting plate 9 can be driven to slide in the opposite direction and reset under the pull of the first tension spring 29. At this time, it is also necessary to pull the sliding frame 30 to prevent the protruding support rod 11 from hitting the bottom of the part 47. At the same time, it will also drive the support rod 11 to move down to the bottom position again. The opening and closing state of the elastic block 45 can be controlled by a mechanical button.

[0027] It is worth noting that: through the setting of this device, it is avoided that the raised position at the bottom of part 47 is lifted up high when placing part 47, which affects the placement of part 47. After the measurement of part 47 is completed, the clamping state of part 47 can be released and part 47 can be pressed down again, so that the raised bottom surface of part 47 pushes the support rod 11 at this position to move down a distance again, so that after the limit rod 21 slides out of the limit groove 19, the bottom surface of the pushing block 22 pushes the first oblique tooth groove 24 again, so that the lifting block 20 rotates a certain angle. Thereafter, part 47 is released and the second spring 27 rebounds, so that the limit rod 21 can move up and slide into the limit groove 19 again, so that the support rod 11 at this position can be pushed up to the highest point again, and be on the same plane with the top of the support rod 11 at other positions, so as to facilitate the support and fixation of other parts 47. Example 2

[0028] See also Figure 1-Figure 12 Embodiment 2 is described. This embodiment further describes Embodiment 1. The calibration mechanism 5 shown in the figure also includes a plurality of fixed cylinders 34 fixedly mounted on the lifting frame 6. A lifting column 35 is slidably connected in the fixed cylinder 34 along the vertical direction. A third tension spring 36 fixedly connected to the fixed cylinder 34 is fixedly connected at the bottom of the lifting column 35. A telescopic sleeve rod 37 is rotatably connected to the top surface of the lifting column 35. The positioning rod 7 is fixedly mounted on the lower side of one end of the telescopic sleeve rod 37.

[0029] The calibration mechanism 5 also includes a first electric telescopic rod 38 fixedly mounted on the fixed plate 2, the telescopic end of the first electric telescopic rod 38 is fixedly connected to the bottom surface of the lifting frame 6, and the top surface of the fixed cylinder 34 is rotatably connected to a limit block 39 for limiting the lifting column 35.

[0030] In this embodiment, the height of the lifting frame 6 can be controlled by controlling the telescopic length of the first electric telescopic rod 38. The height of the lifting frame 6 is adjusted so that it is slightly higher than the top surface of the part 47. The telescopic sleeve 37 is pulled up to make the lifting column 35 move up in the fixed tube 34, and the telescopic sleeve 37 is rotated to adjust the length of the telescopic sleeve 37, adjust the positioning rod 7 to the required positioning position, release the telescopic sleeve 37, pull back the third tension spring 36, and rotate the limit block 39 to limit the position of the telescopic sleeve 37. When the positioning of multiple groups of positioning rods 7 is completed, as the bottom surface of the part 47 is lifted, it can be ensured that the positions where the bottoms of several positioning rods 7 are in conflict are all in the same horizontal plane. At this time, the top view size taken from the top view of the plane is relatively accurate.

[0031] It should be noted that after the positioning and clamping of the part 47 is completed, the limiting state of the limit block 39 needs to be released, and the telescopic sleeve 37 needs to be pulled and rotated so that the positioning rod 7 is rotated to a position away from the part 47 to avoid interference with the top view of the part 47 during shooting. Example 3

[0032] See also Figure 1-Figure 12 Embodiment 3 is described. This embodiment further describes Embodiment 1. The clamping mechanism 13 shown in the figure includes a plurality of second electric telescopic rods 40 fixedly mounted on the lifting frame 6. The telescopic ends of the second electric telescopic rods 40 are fixedly connected to a guide frame 41. A guide rod 42 is slidably connected to the guide frame 41 in a vertical direction. A clamping block 43 for clamping and fixing a part 47 is fixedly connected to the side surface of the bottom end of the guide rod 42. A fixing nut 44 for limiting and fixing the position of the guide rod 42 is provided on the guide frame 41.

[0033] In this embodiment, the clamping blocks 43 of appropriate shapes are replaced on the guide rod 42 according to the shapes of the two sides of the part 47. After the bottom end of the part 47 is lifted up and the top surface to be measured is tightly in contact with the bottom of the positioning rod 7, the second electric telescopic rod 40 can be controlled to push the guide frame 41 to the two sides of the part 47. After adjusting the height of the guide rod 42 so that the clamping blocks 43 can just stably clamp the two sides of the part 47, the position of the guide rod 42 can be fixed by the fixing nuts 44 to complete the clamping operation on the two sides of the part 47. Thereafter, the auxiliary structures such as the airbag 12, the positioning rod 7, and the support rod 11 can be removed. The part 47 can be fixedly clamped only by the clamping blocks 43 on both sides, thereby reducing the impact on the image of the part 47.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An auxiliary fixture of an image measuring instrument for parts inspection, characterized in that: include: A machine body (1), wherein two sets of fixed plates (2) are fixedly connected to the machine body (1), a sliding frame (3) capable of being controlled to slide horizontally is provided on the machine body (1), and a measuring instrument (4) capable of being adjusted to slide horizontally is provided on the sliding frame (3); Also includes: A calibration mechanism (5), the calibration mechanism (5) comprising a lifting frame (6) slidably connected to the fixing plates (2) on both sides along a vertical direction, the lifting frame (6) being provided with a plurality of groups of positioning rods (7) for positioning and contacting positions that need to be in the same plane through the bottom ends of the positioning rods (7) to achieve calibration of the required measurement plane; A support mechanism (8), the support mechanism (8) comprising a mounting plate (9) connected to the top surface of the machine body (1) in a horizontal sliding direction, a plurality of groups of fixed tubes (10) fixedly connected to the mounting plate (9), the plurality of groups of fixed tubes (10) each being connected to a support rod (11) in a vertical sliding direction, a plurality of groups of air bags (12) fixedly connected to the mounting plate (9), the plurality of groups of air bags (12) being located between adjacent fixed tubes (10) and used for placing a part to be tested on the upper end of the support rod (11) for preliminary support, and after the positioning rod (7) is moved to a desired position, the bottom of the part is lifted up by inflating the air bag (12), so that the top surface of the part contacts the bottom surface of the plurality of groups of positioning rods (7), thereby realizing a leveling function; A clamping mechanism (13), the clamping mechanism (13) being mounted on the lifting frame (6) and being used to clamp and fix two sides of the adjusted part.

2. The image measuring instrument auxiliary fixture for parts inspection according to claim 1 is characterized in that: The support mechanism (8) further comprises a sliding block (14) fixedly mounted on both sides of the mounting plate (9), the sliding block (14) being fixedly connected to an inflator (15), the inflator (15) being connected to a delivery pipe (16), the plurality of groups of air bags (12) being connected to the delivery pipe (16), the fixed pipe (10) being provided with a control member (17) for limiting the position of the support rod (11) in a desired area after being pressed downward, so as to avoid continuously lifting the raised position at the bottom of the part.

3. The image measuring instrument auxiliary fixture for parts inspection according to claim 2 is characterized in that: The control member (17) comprises a limiting tube (18) fixedly mounted in the fixed tube (10), a plurality of limiting grooves (19) being evenly arranged on the side of the limiting tube (18), an outer wall of the support rod (11) being movably sleeved with an inner wall of the limiting tube (18), a lifting block (20) being movably sleeved in the fixed tube (10), a plurality of limiting rods (21) being able to be plugged into the limiting grooves (19) in a vertical direction being fixedly connected to the top surface of the lifting block (20), and a side of the support rod (11) being fixedly connected to the limiting grooves (19). A push block (22) is slidably connected to the limit groove (19) in a vertical direction, a lifting ring (23) is fixedly connected to the lifting block (20), a plurality of groups of first oblique tooth grooves (24) capable of slidingly fitting with the bottom surface of the push block (22) are evenly arranged on the upper side of the lifting ring (23), a plurality of groups of second oblique tooth grooves (25) capable of slidingly fitting with the top surface of the limit rod (21) are evenly arranged on the bottom of the limit tube (18), and the top surface of the limit rod (21) and the bottom surface of the push block (22) are both designed as inclined surfaces.

4. The image measuring instrument auxiliary fixture for parts inspection according to claim 3 is characterized in that: The control member (17) further comprises a first spring (26) fixedly mounted on the upper side of the lifting block (20); a second spring (27) is fixedly connected to the bottom of the fixing tube (10); the top surface of the second spring (27) is rotationally fitted with the bottom surface of the lifting block (20); and a driving member (28) is provided on the mounting plate (9) for synchronously controlling the support rod (11) to move downward and moving the mounting plate (9) away from the bottom of the part after the part is fixedly clamped.

5. The image measuring instrument auxiliary fixture for parts inspection according to claim 4 is characterized in that: The driving member (28) comprises a first tension spring (29) fixedly mounted on the sliding block (14), one end of the first tension spring (29) being fixedly connected to the machine body (1), a sliding frame (30) being slidably connected inside the mounting plate (9), a plurality of groups of connecting rods (31) being evenly fixedly connected inside the sliding frame (30), a plurality of groups of connecting ropes (32) being evenly fixedly connected to the side surfaces of the connecting rods (31), the connecting ropes (32) passing through the mounting plate (9) and the fixing tube (10), and being slidably connected to the mounting plate (9) and the inner wall of the fixing tube (10), one end of the connecting rope (32) away from the connecting rod (31) being rotatably connected to the bottom surface of the lifting block (20) via a rotating buckle, a second tension spring (33) being fixedly connected to the connecting rod (31) inside the mounting plate (9), the elastic force of the first tension spring (29) being greater than the elastic force of the second tension spring (33).

6. The image measuring instrument auxiliary fixture for parts inspection according to claim 1, characterized in that: The calibration mechanism (5) further comprises a plurality of fixed cylinders (34) fixedly mounted on the lifting frame (6); a lifting column (35) is slidably connected in a vertical direction inside the fixed cylinder (34); a third tension spring (36) fixedly connected to the fixed cylinder (34) is fixedly connected to the bottom of the lifting column (35); a telescopic sleeve rod (37) is rotatably connected to the top surface of the lifting column (35); and the positioning rod (7) is fixedly mounted on the lower side of one end of the telescopic sleeve rod (37).

7. The image measuring instrument auxiliary fixture for parts inspection according to claim 6 is characterized in that: The calibration mechanism (5) further comprises a first electric telescopic rod (38) fixedly mounted on the fixed plate (2), the telescopic end of the first electric telescopic rod (38) being fixedly connected to the bottom surface of the lifting frame (6), and the top surface of the fixed cylinder (34) being rotatably connected to a limit block (39) for limiting the position of the lifting column (35).

8. The image measuring instrument auxiliary fixture for parts inspection according to claim 1, characterized in that: The clamping mechanism (13) comprises a plurality of groups of second electric telescopic rods (40) fixedly mounted on the lifting frame (6); the telescopic ends of the second electric telescopic rods (40) are fixedly connected to a guide frame (41); a guide rod (42) is slidably connected in a vertical direction in the guide frame (41); a clamping block (43) for clamping and fixing a part is fixedly connected to the side surface of the bottom end of the guide rod (42); and a fixing nut (44) for limiting and fixing the position of the guide rod (42) is provided on the guide frame (41).

9. The image measuring instrument auxiliary fixture for parts inspection according to claim 2, characterized in that: An elastic clamping block (45) is provided on the machine body (1), and a clamping groove (46) capable of being clamped with one end of the elastic clamping block (45) is provided on the side surface of the sliding block (14).

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