CN109269447B - Retrieve lead screw precision detection device - Google Patents
Retrieve lead screw precision detection device Download PDFInfo
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- CN109269447B CN109269447B CN201811375080.3A CN201811375080A CN109269447B CN 109269447 B CN109269447 B CN 109269447B CN 201811375080 A CN201811375080 A CN 201811375080A CN 109269447 B CN109269447 B CN 109269447B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B11/27—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
- G01B11/272—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes using photoelectric detection means
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Abstract
A device for detecting the precision of a recovery screw rod belongs to the technical field of detection machinery. The device comprises a detection platform, wherein a front guide rail and a rear guide rail of a moving frame are arranged on one upward side of the detection platform, a left support seat adjusting guide rail of a tested lead screw is arranged on the detection platform, and trapezoidal bolt grooves are respectively arranged at the positions corresponding to the front side and the rear side of the left support seat adjusting guide rail of the tested lead screw; the right side of the movable frame is provided with lifting platform guide rails I and II; the left and right displacement driving mechanism of the moving frame is arranged on the detection platform; the tested lead screw driving mechanism is arranged on the detection platform; the tested screw nut slide block is sleeved on the tested screw; the tested lead screw nut slide block righting mechanism is matched with the lifting platform guide rails I and II; the lifting driving mechanism of the lifting platform is arranged on the right side of the movable frame; the CCD camera with the up-and-down jumping screw to be measured is arranged at the lower part of the front side of the movable frame; the CCD camera is arranged on the centering mechanism of the nut and the slide block of the screw rod to be measured. The detection efficiency is improved; the smooth detection is ensured; and resources are saved.
Description
Technical Field
The invention belongs to the technical field of detection machinery, and particularly relates to a device for detecting the precision of a recovery screw rod.
Background
The above-mentioned recycling screw (also called "recycling screw" or "recycling screw", the same applies hereinafter) refers to a screw to be recycled and reused, which is detached from various scrapped or used electromechanical devices with screw transmission mechanisms, because the perfectness of the screw serving as a structural system of the screw transmission mechanism is higher when the devices are scrapped, in particular: even if the screw has linearity defects, the screw can be applied to electromechanical devices with significant transmission precision according to the difference of the linearity defects. Therefore, if the screw rods on the scrapped electromechanical equipment are generally regarded as waste copper and broken iron, the waste of resources is undoubtedly caused, which is contrary to the economical, energy-saving and circular economic spirit actively advocated by the whole society at present.
At present, the method for judging whether the straightness problem is serious to the extent that the straightness problem cannot be reused or not by a mode of seeing and combining experience for a lead screw unloaded from waste electromechanical equipment generally has the defects that: because the determination of the straightness is accomplished by subjective or intuitive judgment of a person, the method has certain blindness, because the judgment result is different from person to person, the method has scientific and reasonable property, and even the judgment of the same person on the same screw rod at different time and/or different places can generate different or even opposite results.
Technical information about screw straightness detection can be seen in published chinese patent documents, and typically, CN102889863B recommends "an automatic screw straightness detection device and its application", which is suitable for screw manufacturers to detect the straightness of screws produced by the manufacturers, and aims to ensure product quality, and apparently, the CN102889863B structure can be used to detect the straightness of recycled screws, but not for the following reasons: firstly, because the difference of the quality indexes such as concentricity of the lead screws of the same batch and the same specification produced by a lead screw manufacturer is very little, the lead screw manufacturer has strict quality control requirements on each process link in the production process, therefore, when the standard lead screw (called ball screw in the patent) is used for detecting the lead screw to be detected according to the method taught by the patent, the screw to be tested does not affect the movement of the mobile measuring table (i.e. "mobile rack", the same applies hereinafter) (see paragraph 0039 of the patent), however, the screw unloaded from the scrapped equipment does not avoid significant differences from the standard screw, for example when the screw with large differences in straightness unloaded from the scrapped equipment is detected, therefore, the mobile measuring table cannot move smoothly, so that the test fails, or the standard screw rod is damaged due to frequent jumping of the mobile measuring table; secondly, if the measured lead screw is in sliding fit with the movable measuring table, the measured lead screw and the measuring table are substantially free of transmission fit relation, the relation among the standard lead screw, the measured lead screw and the movable measuring table is disjointed, and the straightness of the measured lead screw cannot be measured according to the standard lead screw; thirdly, because the patent teaches that the standard lead screw and the tested lead screw rotate synchronously (lines 7 to 8 in paragraph 003 of the specification), the mobile measuring table must be matched with the standard lead screw and the tested lead screw simultaneously in a threaded manner to ensure that the mobile measuring table slides along the first and second mobile guide rails called by the patent in the testing process, however, when the mobile measuring table is used for detecting the waste lead screw, if the problem of straightness of the waste lead screw is serious (large deflection), the mobile measuring table cannot slide along the first and second driving guide rails, even the mobile measuring table stays on the first and second mobile guide rails because of the occurrence of a stuffiness machine of a motor of a power mechanism. Based on the factors that are not limited to the foregoing, it is necessary to design a special device suitable for detecting the waste lead screw, and the technical solutions to be described below are made in this context.
Disclosure of Invention
The invention aims to provide a recovered lead screw precision detection device which is beneficial to reflecting good automatic detection effect, improving the detection efficiency, saving precious labor resources, avoiding interference influence on normal movement of a movable frame caused by vibration of a recovered lead screw in the detection process, ensuring smooth detection, accurately measuring the straightness of the recovered lead screw, providing reference basis for equipment with different transmission precision requirements for the recovered lead screw and reflecting resource saving.
The invention is to accomplish the task in such a way, a precision detection device for a recycling lead screw comprises a detection platform, a front guide rail of a moving frame and a rear guide rail of the moving frame are fixed on one upward side of the detection platform, a left support seat of the lead screw to be detected is arranged at a position corresponding to the position between the front guide rail of the moving frame and the left end of the rear guide rail of the moving frame, a right support seat of the lead screw to be detected is arranged at a position corresponding to the position between the front guide rail of the moving frame and the right end of the rear guide rail of the moving frame, the left support seat and the right support seat of the lead screw to be detected correspond to each other in the left-right direction, wherein a left support seat adjusting guide rail of the lead screw to be detected is fixed on the detection platform at a position corresponding to the position between the left ends of the front guide rail and the rear guide rail of the moving frame in a state of being parallel to the long side direction of the detection platform, and trapezoidal bolt grooves are, the middle position of the bottom of the tested lead screw left supporting seat is in sliding fit with the adjusting guide rail of the tested lead screw left supporting seat, and the front end and the rear end of the tested lead screw left supporting seat are fixed with the detection platform at positions corresponding to the trapezoidal bolt grooves; a movable frame, the front lower part of which is matched with the front guide rail of the movable frame in a sliding way, the rear lower part of which is matched with the rear guide rail of the movable frame in a sliding way, and a lifting table guide rail I and a lifting table guide rail II are fixed on the right side of the movable frame in a longitudinal state, wherein the lifting table guide rail I and the lifting table guide rail II are parallel to each other in front and back; the left-right displacement driving mechanism of the moving frame is arranged on the detection platform at a position corresponding to the rear side of the rear guide rail of the moving frame, and the lower part of the rear side of the moving frame is connected with the left-right displacement driving mechanism of the moving frame; the tested lead screw driving mechanism is arranged on the detection platform at a position corresponding to the right side of the right support seat of the tested lead screw; the tested lead screw nut sliding block is sleeved on the tested lead screw in a sliding manner in a use state; the tested lead screw nut and slide block righting mechanism is used for avoiding the deflection of the tested lead screw nut and slide block, and is in sliding fit with the lifting platform guide rail I and the lifting platform guide rail II in a state of being magnetically attracted with the upper part of the tested lead screw nut and slide block; the lifting platform lifting driving mechanism is arranged on the right side of the moving frame at a position corresponding to the upper part of the tested lead screw nut and slide block righting mechanism and is in transmission connection with the tested lead screw nut and slide block righting mechanism; the CCD camera with the up-and-down jumping screw rod is arranged at the lower part of the front side of the movable frame at a position corresponding to the front side of the screw rod to be detected; and the CCD camera with the front-back deviation of the tested lead screw is arranged on the righting mechanism of the nut and the slide block of the tested lead screw at a position corresponding to the upper part of the tested lead screw.
In a specific embodiment of the invention, a left measured lead screw supporting groove is formed on the upward side of the left measured lead screw supporting seat, a right measured lead screw supporting groove is formed on the upward side of the right measured lead screw supporting seat, and the upper parts of the left measured lead screw supporting groove and the right measured lead screw supporting groove form an opening.
In another specific embodiment of the present invention, the left support groove and the right support groove of the tested lead screw are V-shaped, semicircular or U-shaped.
In another specific embodiment of the present invention, a moving frame front sliding guide shoe is fixed to a lower portion of a front side of the moving frame, and a pair of moving frame front sliding guide shoe guide blocks, which are slidably engaged with the moving frame front guide rail, are fixed to a bottom portion of the moving frame front sliding guide shoe; a rear sliding guide shoe of the movable frame is fixed at the lower part of the rear side of the movable frame, a pair of rear sliding guide shoe guide blocks of the movable frame is fixed at the bottom of the rear sliding guide shoe of the movable frame, and the rear sliding guide shoe guide blocks of the movable frame are in sliding fit with the rear guide rail of the movable frame, wherein the lower part of the rear side of the rear sliding guide shoe of the movable frame is connected with a left-right displacement driving mechanism of the movable frame arranged on the detection platform; the CCD camera with the up-and-down jumping lead screw to be measured is arranged on the front sliding guide shoe of the movable frame.
In still another embodiment of the present invention, the moving frame left and right displacement drive includes a moving frame left and right displacement drive motor, a moving frame left and right displacement drive screw, and a moving frame left and right displacement drive nut, the moving frame left and right displacement drive motor is fixed on the detection platform through a moving frame left and right displacement drive motor mount at a position corresponding to the rear side of the right end of the moving frame rear rail, the moving frame left and right displacement drive screw corresponds to the rear side of the moving frame rear rail and is parallel to the moving frame rear rail, the left end of the moving frame left and right displacement drive screw is rotatably supported on a moving frame left and right displacement drive screw first bearing mount i, and the right end of the moving frame left and right displacement drive screw is rotatably supported on a moving frame left and right displacement drive screw second bearing mount ii and extends to the right side of the moving frame left and right displacement drive screw second bearing mount ii and is drivingly connected to the moving frame left and right displacement drive motor, the movable rack left and right displacement driving nut is in threaded fit with the movable rack left and right displacement driving screw, the movable rack left and right displacement driving screw first bearing seat I and the movable rack left and right displacement driving screw second bearing seat II are fixed with the detection platform, the movable rack left and right displacement driving motor is a motor with a forward and reverse rotation function, a driving nut connecting plate is connected to the lower portion of the rear side of the rear sliding guide shoe of the movable rack, and the driving nut connecting plate is connected with the front side of the movable rack left and right displacement driving nut through a driving nut connecting plate fixing screw.
In yet another specific embodiment of the present invention, the measured lead screw driving mechanism includes a measured lead screw driving motor and a universal coupling, the measured lead screw driving motor is fixed on the detection platform through a measured lead screw driving motor base at a position corresponding to the right side of the measured lead screw right supporting seat, the right end of the universal coupling is hinged to a measured lead screw driving motor shaft coupling of the measured lead screw driving motor, and the right end of the measured lead screw is temporarily connected to the left end of the universal coupling in a detection state.
In a more specific embodiment of the invention, the tested lead screw nut slide block righting mechanism comprises a lifting platform, a magnet fixing seat and a magnet, the front end of the lifting platform and one side facing the moving rack are in sliding fit with the lifting platform guide rail I through a lifting platform front slide block I, the rear end of the lifting platform and one side which also faces to the moving frame are in sliding fit with the lifting platform guide rail II through a lifting platform rear sliding block II, the magnet fixing seat corresponds to the right side of the lifting platform, the upper end of the magnet fixing seat is fixed with the middle part of the right side of the lifting platform, while the lower end extends towards the direction of the tested screw nut slide block, the magnet is fixed at the lower end of the magnet fixing seat and is magnetically attracted with the tested screw nut slide block, the lifting platform lifting driving mechanism is in transmission connection with the lifting platform at a position corresponding to the upper part of the lifting platform; the CCD camera is fixed in the middle of the right side of the magnet fixing seat, and the screw to be measured deviates back and forth.
In a further specific embodiment of the invention, a lifting platform nut seat is formed in the middle of the lifting platform and at a position corresponding to the position between the lifting platform front slide block I and the lifting platform rear slide block II, and a lifting platform driving screw rod matching nut is arranged in the lifting platform nut seat; the lifting platform lifting driving mechanism comprises a driving motor fixing seat, a lifting platform driving motor and a lifting platform driving screw rod, the driving motor fixing seat corresponds to the position between the upper ends of the lifting platform guide rail I and the lifting platform guide rail II and is fixed on the right side of the moving frame, the lifting platform driving motor is fixed on the driving motor fixing seat, a lifting platform driving motor shaft of the lifting platform driving motor faces downwards, the upper end of the lifting platform driving screw rod is in transmission connection with the lifting platform driving motor shaft, and the lower end of the lifting platform driving screw rod is in transmission fit with a lifting platform driving screw rod matching nut.
In a more specific embodiment of the present invention, the lifting platform driving motor is a motor with forward and reverse rotation functions.
One of the technical effects of the technical scheme provided by the invention is that when the tested lead screw is to be detected, the tested lead screw is only required to be arranged on the tested lead screw nut slide block in a penetrating manner, the two ends of the tested lead screw are respectively arranged on the tested lead screw left supporting seat and the tested lead screw right supporting seat, the right end of the tested lead screw is temporarily connected with the tested lead screw driving mechanism, the moving frame is driven by the moving frame left-right displacement driving mechanism to move along the front guide rail and the rear guide rail of the moving frame, the tested lead screw up-down jumping CCD camera is driven by the moving frame in the moving process and the tested lead screw nut slide block is driven by the tested lead screw nut slide block righting mechanism to move, the tested lead screw is driven by the tested lead screw nut slide block righting mechanism to shift forward and backward and the tested lead screw nut slide block is driven to move along the tested lead screw, meanwhile, the change of the straightness of the tested lead screw can cause the tested lead screw, the CCD camera is used for shooting the detected lead screw by the up-and-down jumping CCD camera of the detected lead screw and the front-and-back shifting CCD camera of the detected lead screw respectively, and the shot information is transmitted to the computer processing system to calculate the straightness data of the detected lead screw, so that the good automatic detection effect can be embodied, the detection efficiency can be improved, and the precious labor resources can be saved; secondly, in the detection process, the tested lead screw nut slide block moves on the tested lead screw under the suction of the tested lead screw nut slide block righting mechanism, so that the change of the straightness of the tested lead screw cannot generate interference influence on the normal movement of the moving frame driven by the moving frame left and right displacement driving mechanism, and the smooth detection can be ensured; thirdly, due to the fact that the straightness data of the recovery lead screw can be obtained, whether the recovery lead screw is suitable for equipment with different transmission precision requirements can be provided for the recovery lead screw, and resources can be saved.
Drawings
FIG. 1 is a block diagram of an embodiment of the present invention.
Detailed Description
In order to clearly understand the technical spirit and the advantages of the present invention, the applicant below describes in detail by way of example, but the description of the example is not intended to limit the technical scope of the present invention, and any equivalent changes made according to the present inventive concept, which are merely in form and not in material, should be considered as the technical scope of the present invention.
In the following description, any concept related to the directions or orientations of up, down, left, right, front and rear is given with respect to the position of fig. 1, and thus it should not be understood as a specific limitation to the technical solution provided by the present invention.
Referring to fig. 1, there is shown a testing platform 1, on one side of the testing platform 1 facing upward, a moving frame front rail 11 is fixed by moving frame front rail fixing screws 111 and a moving frame rear rail 12 is fixed by moving frame rear rail fixing screws 121, and a tested lead screw left bearing 13 is provided (i.e. fixed by screws) at a position corresponding to between the moving frame front rail 11 and the left end of the moving frame rear rail 12, and a tested lead screw right bearing 14 is provided (i.e. fixed by screws) at a position corresponding to between the moving frame front rail 11 and the right end of the moving frame rear rail 12, the tested lead screw left and right bearings 13, 14 corresponding to each other left and right, wherein a tested lead screw left adjusting rail 16 is fixed on the testing platform 1 and at a position corresponding to between the left ends of the moving frame front and rear rails 11, 12 in parallel to the long side direction of the testing platform 1 by adjusting rail fixing screws 161, a trapezoidal bolt groove 17 is respectively formed in the front side and the rear side of the length direction of the measured lead screw left supporting seat adjusting guide rail 16, the middle position of the bottom of the measured lead screw left supporting seat 13 is in sliding fit with the measured lead screw left supporting seat adjusting guide rail 16, and the front end and the rear end of the measured lead screw left supporting seat 13 are fixed with the detection platform 1 at the positions corresponding to the trapezoidal bolt grooves 17; a moving frame 2 is shown, the front lower part of the moving frame 2 is slidably fitted with the aforementioned moving frame front rail 11, the rear lower part of the moving frame 2 is slidably fitted with the aforementioned moving frame rear rail 12, and a lifting table rail i 21 and a lifting table rail ii 22 are fixed to the right side of the moving frame 2 in a longitudinal state by rail fixing screws, respectively, the lifting table rail i 21 and the lifting table rail ii 22 being parallel to each other in the front-rear direction; a moving gantry left-right displacement drive mechanism 3 is shown, the moving gantry left-right displacement drive mechanism 3 being provided on the detection platform 1 at a position corresponding to the rear side of the moving gantry rear rail 12, the rear lower portion of the moving gantry 2 being connected to the moving gantry left-right displacement drive mechanism 3; a tested lead screw driving mechanism 4 is shown, and the tested lead screw driving mechanism 4 is arranged on the detection platform 1 at a position corresponding to the right side of the tested lead screw right supporting seat 14; a tested screw nut slide block 5 is shown, and the tested screw nut slide block 5 is slidingly sleeved on a tested screw 10 in a use state; a tested lead screw nut and slide block righting mechanism 6 for avoiding the deflection (lodging) of the tested lead screw nut and slide block 5 is shown, and the tested lead screw nut and slide block righting mechanism 6 is in sliding fit with the lifting platform guide rail I21 and the lifting platform guide rail II 22 under the state of attracting the upper part of the tested lead screw nut and slide block 5; a lifting platform lifting driving mechanism 7 is shown, the lifting platform lifting driving mechanism 7 is arranged on the right side of the moving frame 2 at a position corresponding to the upper part of the tested lead screw nut and slide block righting mechanism 6 and is in transmission connection with the tested lead screw nut and slide block righting mechanism 6; a measured screw up-and-down jumping CCD camera 8 is shown, and the measured screw up-and-down jumping CCD camera 8 is arranged at the lower part of the front side of the moving frame 2 at the position corresponding to the front side of the measured screw 10, namely, at the position corresponding to the front side of the measured screw nut slide block 5; a measured lead screw back and forth offset CCD camera 9 is shown, which measured lead screw back and forth offset CCD camera 9 is arranged on the measured lead screw nut and slide block centering mechanism 6 at a position corresponding to above the measured lead screw 10. The CCD camera 8 for measuring the vertical runout of the lead screw is used for shooting the vertical runout image of the lead screw 10 to be measured, and the CCD camera 9 for measuring the front and back runout of the lead screw is used for shooting the runout image (namely the front and back runout) of the lead screw 10 to be measured, so that the accuracy of the lead screw 10 to be measured, namely the straightness data can reach a satisfactory degree.
As shown in fig. 1, a support guide chute 132 is formed at a central position of the bottom of the left support base 13 of the lead screw to be tested, the support guide chute 132 is slidably engaged with the left support base adjustment rail 16 of the lead screw to be tested, the front end and the rear end of the left support base 13 of the lead screw to be tested are fixed to the detection platform 1 at positions corresponding to the trapezoidal bolt grooves 17 by trapezoidal bolts 133, and the upper ends of the trapezoidal bolts 133 extend to the upper part of the left support base 13 of the lead screw to be tested and are provided with trapezoidal bolt nuts 1331. The retrieved tested lead screw 10 has different lengths, so the position of the tested lead screw left supporting seat 13 on the tested lead screw left supporting seat adjusting guide rail 16 can be changed to adapt.
As shown in fig. 1, the inspection platform 1 is supported on the floor of the inspection work place by the inspection platform support legs 15, and the inspection platform leveling screws 151 are provided at the bottoms of the inspection platform support legs 15.
A left screw receiving groove 131 is formed on the upward side of the left screw receiving base 13, and a right screw receiving groove 141 is formed on the upward side of the right screw receiving base 14. In the present embodiment, the upper portions of the left screw support groove 131 and the right screw support groove 141 are open, that is, the upper portions are not closed, and the left screw support groove 131 and the right screw support groove 141 are V-shaped, but a semicircular shape or a U-shaped shape may be adopted.
Continuing with fig. 1, a traveling frame front slide guide shoe 23 is fixed to the front lower part of the traveling frame 2 by a traveling frame front slide guide shoe screw 232, a pair of traveling frame front slide guide shoe guide shoes 231 is fixed to the bottom of the traveling frame front slide guide shoe 23 by a traveling frame front slide guide shoe guide screw 2311, the pair of traveling frame front slide guide shoe guide shoes 231 is slidably engaged with the traveling frame front guide rail 11, a traveling frame rear slide guide shoe 24 is fixed to the rear lower part of the traveling frame 2 by a traveling frame rear slide guide shoe screw 243, a pair of traveling frame rear slide guide shoe guide shoes 241is fixed to the bottom of the traveling frame rear slide guide shoe 24 by a traveling frame rear slide guide shoe screw 1, the pair of traveling frame rear slide guide shoe guide shoes 241 is slidably engaged with the traveling frame rear guide rail 12, wherein the rear lower part of the traveling frame rear slide guide shoe 24 is connected to the traveling frame left-right displacement driving mechanism 3 provided on the detection platform 1 (ii) a The CCD camera 8 with the measured lead screw bouncing up and down is arranged on the sliding guide shoe 23 which is fixed in front of the movable frame.
Continuing to refer to fig. 1, the left/right displacement drive 3 comprises a left/right displacement drive motor 31, a left/right displacement drive screw 32 and a left/right displacement drive nut 33, the left/right displacement drive motor 31 is fixed to the detection platform 1 via a left/right displacement drive motor mount 311 at a position corresponding to the rear side of the right end of the rear rail 12, the left/right displacement drive screw 32 is parallel to the rear rail 12, the left end of the left/right displacement drive screw 32 is rotatably supported on a first bearing mount I321 of the left/right displacement drive screw, and the right end of the left/right displacement drive screw 32 is rotatably supported on a second bearing mount II 322 of the left/right displacement drive screw and extends to the right side of the second bearing mount II 322 of the left/right displacement drive screw, and is in transmission connection with the left/right displacement drive motor 31 The left and right displacement driving nut 33 of the moving frame is in threaded fit with the left and right displacement driving screw 32 of the moving frame, the first bearing seat I321 of the left and right displacement driving screw of the moving frame and the second bearing seat II 322 of the left and right displacement driving screw of the moving frame are fixed with the detection platform 1, the left and right displacement driving motor 31 of the moving frame is a motor with positive and negative rotation functions, a driving nut connecting plate 242 is connected to the rear sliding guide shoe 24 of the moving frame, and the driving nut connecting plate 242 is connected with the left and right displacement driving nut 33 of the moving frame through a driving nut connecting plate fixing screw 2421.
The screw drive mechanism 4 includes a screw drive motor 41 to be measured and a universal joint 42, the screw drive motor 41 to be measured is fixed to the inspection platform 1 through a screw drive motor base 411 at a position corresponding to the right side of the screw right support base 14 to be measured, the right end of the universal joint 42 is hinged to a screw drive motor shaft joint 412 of the screw drive motor 41 to be measured through a hinge pin 421, and the right end of the screw 10 to be measured is temporarily connected to the left end of the universal joint 42 in a detection state and locked by a screw lock screw 422 disposed at the left end of the universal joint 42.
The measured lead screw nut slider righting mechanism 6 comprises a lifting table 61, a magnet fixing seat 62 and a magnet 63, the front end of the lifting table 61 and one side (namely left side) facing the moving frame 2 are in sliding fit with the lifting table guide rail I21 through a lifting table front slider I611, the rear end of the lifting table 61 and one side (namely left side) also facing the moving frame 2 are in sliding fit with the lifting table guide rail II 22 through a lifting table rear slider II 612, the magnet fixing seat 62 corresponds to the right side of the lifting table 61, the upper end of the magnet fixing seat 62 is fixed with the right middle part of the lifting table 61 through a magnet fixing seat screw 621, the lower end extends towards the measured lead screw nut slider 5, the magnet 63 is fixed at the lower end of the magnet fixing seat 62 through a magnet fixing screw 631 and is magnetically attracted with the upward side of the measured lead screw nut slider 5 made of a magnetic conductive material, the lifting table lifting driving mechanism 7 is in transmission connection with the lifting table 61 at a position corresponding to the upper part of the lifting table 61; the CCD camera 9 with the front and back deviation of the screw to be measured is fixed at the right middle part of the magnet fixing seat 62.
As shown in fig. 1, the lift table front slide block i 611 is fixed to the lift table 61 by a lift table front slide block fixing screw 6111, and similarly, the lift table rear slide block ii 612 is fixed to the lift table 61 by a lift table rear slide block fixing screw 6121.
Continuing with fig. 1, a lift table nut seat 613 is formed in the middle of the lift table 61 at a position corresponding to between the lift table front slide i 611 and the lift table rear slide ii 612, and a lift table drive screw engagement nut 6131 is provided in the lift table nut seat 613.
The lifting platform lifting driving mechanism 7 includes a driving motor fixing seat 71, a lifting platform driving motor 72 and a lifting platform driving screw 73, the driving motor fixing seat 71 is fixed to the right side of the movable frame 2 at a position corresponding to the position between the upper ends of the lifting platform guide rail i 21 and the lifting platform guide rail ii 22, the lifting platform driving motor 72 is fixed to the driving motor fixing seat 71 through a lifting platform driving motor fixing screw 721, a lifting platform driving motor shaft of the lifting platform driving motor 72 faces downward, the upper end of the lifting platform driving screw 73 is in transmission connection with the lifting platform driving motor shaft, the lower end of the lifting platform driving screw 73 is in transmission fit with the lifting platform driving screw fitting nut 6131, and the lifting platform driving motor 72 is a motor with a forward and reverse rotation function.
The lifting driving mechanism 7 of the lifting platform has the function of ensuring that the magnet 63 properly attracts the screw nut slide block 5 to be tested. Specifically, when the elevating table driving motor 72 is operated, the elevating table driving screw 73 is rotated by the motor, since the elevating table driving screw 73 is screw-engaged (i.e. transmission-engaged) with the elevating table driving screw engaging nut 6131, therefore, the lifting table 61 is displaced downwards by the lifting table driving screw 73 through the lifting table driving screw and the nut 6131, the magnet fixing seat 62 is driven to correspondingly displace downwards, since the magnet 63 is fixed to the downward side of the lower end of the magnet holder 62, when the magnet holder 62 moves downward together with the magnet 63, the magnet 63 can be in a good magnetic attraction state to the tested lead screw nut slide block 5, otherwise, when the elevating platform driving motor 72 works reversely relative to the working direction, the magnet 63 is displaced upwards according to the reverse process, so that the magnet 63 is ensured to be in a good magnetic attraction state with the tested lead screw nut slider 5. Therefore, no matter the magnet 63 moves upwards or downwards, the magnetic attraction state of the magnet to the tested lead screw nut slide block 5 is ensured in the detection and debugging process.
As can be seen from the above description: if the magnet 63 is not provided, when the measured lead screw 10 is driven by the measured lead screw driving motor 41 of the measured lead screw driving mechanism 4 to rotate through the universal coupling 42, the measured lead screw nut slider 5 cannot be ensured not to rotate along with the measured lead screw 10, and the situation that the measured lead screw nut slider rotates for a moment and stops for a moment often occurs. Therefore, just by the magnetic attraction of the magnet 63 to the tested lead screw nut slide block 5, the tested lead screw 10 can be ensured not to rotate but only to move along the tested lead screw 10 when the tested lead screw 10 rotates. In the process of rotation of the tested lead screw 10, the change situations of the straightness of the vertical runout and the front-back deviation of the tested lead screw 10 are picked up by the CCD camera 8 for vertical runout and the CCD camera 9 for front-back deviation of the tested lead screw and are transmitted to a computer processing system, and the runout error of the recovered lead screw, namely the tested lead screw 10, is obtained through analysis.
When testing a recycled screw, namely the tested screw 10 mentioned above repeatedly, the tested screw 10 is firstly inserted on the tested screw nut slider 5, that is, the tested screw nut slider 5 is slidingly sleeved on the tested screw 10, then the screw head at the left end of the tested screw 10 is supported in the tested screw left supporting groove 131 of the tested screw left supporting seat 13, the screw head at the right end of the tested screw 10 is supported in the tested screw right supporting groove 141 of the tested screw right supporting seat 14 and is connected with the universal coupling 42, specifically, the tested screw locking screw 422 enables the screw head at the right end of the tested screw 10 to be in transmission connection with the tested screw driving motor 41 through the universal coupling 42, then, as described above by the applicant, the magnet 63 is brought into good magnetic attraction (attraction) with the screw nut slide 5 to be tested by the lifting drive mechanism 7 of the lifting table. Then, the left and right moving drive motor 31 of the moving frame structure system of the left and right moving drive mechanism 3 and the screw drive motor 41 of the screw drive mechanism 4 are operated simultaneously, the left and right moving drive motor 31 drives the left and right moving drive screw 32 of the moving frame, the left and right moving drive screw 32 drives the left and right moving drive nut 33 of the moving frame, the left and right moving drive nut 33 drives the rear moving guide shoe 24 of the moving frame through the drive nut connecting plate 242, and the rear moving guide shoe 24 of the moving frame moves from right to left along the rear moving guide rail 12 and drives the front moving guide shoe 23 of the moving frame from right to left along the front moving guide rail 11 through the moving frame 2. In the process, the moving frame 2 is in a moving state from right to left, so that the magnet 63 drives the tested lead screw nut slide block 5 attracted by the magnet to move from right to left along with the tested lead screw 10, in the process, the up-and-down jumping and front-and-back shifting situations of the tested lead screw nut slide block 5 caused by the linearity change of the tested lead screw 10 are captured by the tested lead screw up-and-down jumping CCD camera 8 and the tested lead screw front-and-back shifting CCD camera 9 and fed back to the tested lead screw up-and-down jumping CCD camera 8 and the computer processing system electrically connected with the tested lead screw front-and-back shifting CCD camera 9, and whether the tested lead screw 10 is suitable for being continuously used in other equipment with relatively low transmission precision requirements is analyzed.
And after the detection is finished, taking away the detected lead screw 10 which is finished with the detection according to the reverse process, numbering and storing, and detecting the next detected lead screw 10 to be detected according to the same mode. The process of removing the tested lead screw 10 after the detection is to loosen the locking screw 422 of the tested lead screw first, and separate the tested lead screw 10 from the universal coupling 42, otherwise the same applies.
In conclusion, the technical scheme provided by the invention overcomes the defects in the prior art, successfully completes the invention task and truly realizes the technical effects of the applicant in the technical effect column.
Claims (9)
1. A precision detection device for a recovered lead screw is characterized by comprising a detection platform (1), a movable frame front guide rail (11) and a movable frame rear guide rail (12) are fixed on one upward side of the detection platform (1), a left lead screw bearing seat (13) to be detected is arranged at a position corresponding to the position between the movable frame front guide rail (11) and the left end of the movable frame rear guide rail (12), a right lead screw bearing seat (14) to be detected is arranged at a position corresponding to the position between the movable frame front guide rail (11) and the right end of the movable frame rear guide rail (12), the left and right lead screw bearing seats (13, 14) to be detected correspond to each other left and right, a left lead screw bearing seat adjusting guide rail (16) to be detected is fixed on the detection platform (1) and at a position corresponding to the position between the left ends of the movable frame front and rear guide rails (11, 12) in a state of being parallel to the long edge direction of the detection platform (1), a trapezoidal bolt groove (17) is formed in the front side and the rear side of the length direction of the adjusting guide rail (16) corresponding to the left measured lead screw supporting seat, the bottom center position of the left measured lead screw supporting seat (13) is in sliding fit with the adjusting guide rail (16) of the left measured lead screw supporting seat, and the front end and the rear end of the left measured lead screw supporting seat (13) are fixed with the detection platform (1) at the position corresponding to the trapezoidal bolt groove (17); a moving frame (2), the front lower part of the moving frame (2) is matched with the moving frame front guide rail (11) in a sliding way, the rear lower part of the moving frame (2) is matched with the moving frame rear guide rail (12) in a sliding way, and a lifting table guide rail I (21) and a lifting table guide rail II (22) are fixed on the right side of the moving frame (2) in a longitudinal state, and the lifting table guide rail I (21) and the lifting table guide rail II (22) are parallel to each other in a front-back way; a moving frame left and right displacement driving mechanism (3), the moving frame left and right displacement driving mechanism (3) is arranged on the detection platform (1) at a position corresponding to the rear side of the moving frame rear guide rail (12), and the lower part of the rear side of the moving frame (2) is connected with the moving frame left and right displacement driving mechanism (3); the tested lead screw driving mechanism (4), the tested lead screw driving mechanism (4) is arranged on the detection platform (1) at a position corresponding to the right side of the tested lead screw right supporting seat (14); the tested lead screw nut sliding block (5) is sleeved on the tested lead screw (10) in a sliding manner in a use state; the tested lead screw nut sliding block righting mechanism (6) is used for avoiding the deflection of the tested lead screw nut sliding block (5), and the tested lead screw nut sliding block righting mechanism (6) is in sliding fit with the lifting platform guide rail I (21) and the lifting platform guide rail II (22) in a state of being magnetically attracted with the upper part of the tested lead screw nut sliding block (5); the lifting platform lifting driving mechanism (7) is arranged on the right side of the moving frame (2) at a position corresponding to the upper part of the tested lead screw nut and slide block righting mechanism (6) and is in transmission connection with the tested lead screw nut and slide block righting mechanism (6); the CCD camera (8) with the up-and-down jumping lead screw to be measured is arranged at the lower part of the front side of the movable frame (2) at the position corresponding to the front side of the lead screw (10) to be measured; and the CCD camera (9) with the front-back deviation of the tested lead screw is arranged on the righting mechanism (6) of the nut and the slide block of the tested lead screw at the position corresponding to the upper part of the tested lead screw (10).
2. The precision detection device for the recovery screw according to claim 1, characterized in that a left support groove (131) of the tested screw is formed on the upward side of the left support seat (13) of the tested screw, a right support groove (141) of the tested screw is formed on the upward side of the right support seat (14) of the tested screw, and the upper parts of the left support groove (131) of the tested screw and the right support groove (141) of the tested screw are open.
3. The precision detection device for the recovery screw according to claim 2, wherein the left support groove (131) and the right support groove (141) of the tested screw are V-shaped, semicircular or U-shaped.
4. The precision detection device for the recovery lead screw according to claim 1, characterized in that a movable frame front sliding guide shoe (23) is fixed to the front lower part of the movable frame (2), a pair of movable frame front sliding guide shoe guide blocks (231) is fixed to the bottom of the movable frame front sliding guide shoe (23), and the pair of movable frame front sliding guide shoe guide blocks (231) is in sliding fit with the movable frame front guide rail (11); a rear movable frame sliding guide shoe (24) is fixed at the lower part of the rear side of the movable frame (2), a pair of rear movable frame sliding guide shoe guide blocks (241) are fixed at the bottom of the rear movable frame sliding guide shoe (24), the rear movable frame sliding guide shoe guide blocks (241) are in sliding fit with the rear movable frame guide rail (12), and the lower part of the rear side of the rear movable frame sliding guide shoe (24) is connected with a left-right movable frame displacement driving mechanism (3) arranged on the detection platform (1); the CCD camera (8) with the lead screw to be measured jumping up and down is arranged on the front sliding guide shoe (23) of the movable frame.
5. The lead screw recovery accuracy detecting device according to claim 4, wherein said traveling carriage left/right displacement drive (3) comprises a traveling carriage left/right displacement drive motor (31), a traveling carriage left/right displacement drive screw (32) and a traveling carriage left/right displacement drive nut (33), said traveling carriage left/right displacement drive motor (31) is fixed to said detecting platform (1) through a traveling carriage left/right displacement drive motor mount (311) at a position corresponding to the rear side of the right end of said traveling carriage rear rail (12), said traveling carriage left/right displacement drive screw (32) corresponds to the rear side of said traveling carriage rear rail (12) and is parallel to said traveling carriage rear rail (12), the left end of said traveling carriage left/right displacement drive screw (32) is rotatably supported on a traveling carriage left/right displacement drive screw first bearing seat I (321), and the right end of said traveling carriage left/right displacement drive screw (32) is rotatably supported on a traveling carriage left/right displacement drive screw second bearing seat I (321) The bearing seat II (322) is extended to the right side of the second bearing seat II (322) of the left and right displacement driving screw of the movable frame and is in transmission connection with a left and right displacement driving motor (31) of the movable frame, a left and right displacement driving nut (33) of the movable frame is in threaded fit with a left and right displacement driving screw (32) of the movable frame, the first bearing seat I (321) of the left-right displacement driving screw of the movable frame and the second bearing seat II (322) of the left-right displacement driving screw of the movable frame are fixed with the detection platform (1), the left and right displacement driving motor (31) of the moving frame is a motor with positive and negative rotation functions, a driving nut connecting plate (242) is connected to the lower part of the rear side of the rear sliding guide shoe (24) of the movable frame, the driving nut connecting plate (242) is connected with the front side of the left and right displacement driving nut (33) of the moving frame through a driving nut connecting plate fixing screw (2421).
6. The precision detection device for the recovery screw according to claim 1, characterized in that the tested screw driving mechanism (4) comprises a tested screw driving motor (41) and a universal coupling (42), the tested screw driving motor (41) is fixed on the detection platform (1) through a tested screw driving motor base (411) at a position corresponding to the right side of the tested screw right supporting seat (14), the right end of the universal coupling (42) is hinged with a tested screw driving motor shaft coupling (412) of the tested screw driving motor (41), and the right end of the tested screw (10) is temporarily connected with the left end of the universal coupling (42) in a detection state.
7. The recycled screw precision detection device according to claim 1, characterized in that the tested screw nut slider righting mechanism (6) comprises a lifting table (61), a magnet fixing seat (62) and a magnet (63), the front end of the lifting table (61) and one side facing the moving frame (2) are in sliding fit with the lifting table guide rail I (21) through a lifting table front slider I (611), the rear end of the lifting table (61) and one side also facing the moving frame (2) are in sliding fit with the lifting table guide rail II (22) through a lifting table rear slider II (612), the magnet fixing seat (62) corresponds to the right side of the lifting table (61), the upper end of the magnet fixing seat (62) is fixed with the right middle of the lifting table (61), the lower end extends towards the tested screw nut slider (5), the magnet (63) is fixed with the lower end of the magnet fixing seat (62) and is magnetically attracted with the tested screw nut slider (5) The lifting platform lifting driving mechanism (7) is in transmission connection with the lifting platform (61) at a position corresponding to the upper part of the lifting platform (61); the tested lead screw shifts the CCD camera (9) back and forth and is fixed in the middle of the right side of the magnet fixing seat (62).
8. The recovery screw precision detection device according to claim 7, characterized in that a lifting table nut seat (613) is formed at a middle portion of the lifting table (61) and at a position corresponding to between the lifting table front slider i (611) and the lifting table rear slider ii (612), and a lifting table drive screw engaging nut (6131) is provided in the lifting table nut seat (613); the lifting platform lifting driving mechanism (7) comprises a driving motor fixing seat (71), a lifting platform driving motor (72) and a lifting platform driving screw (73), the driving motor fixing seat (71) is fixed on the right side of the moving frame (2) at a position corresponding to the position between the upper ends of the lifting platform guide rail I (21) and the lifting platform guide rail II (22), the lifting platform driving motor (72) is fixed with the driving motor fixing seat (71), a lifting platform driving motor shaft of the lifting platform driving motor (72) faces downwards, the upper end of the lifting platform driving screw (73) is in transmission connection with the lifting platform driving motor shaft, and the lower end of the lifting platform driving screw (73) is in transmission fit with the lifting platform driving screw matching nut (6131).
9. The precision detecting device for the recycling screw according to claim 8, wherein the driving motor (72) of the elevating platform is a motor with a forward and reverse rotation function.
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| CN109682592B (en) * | 2019-02-22 | 2020-07-28 | 常熟理工学院 | Lead screw nut self-locking detection device for recycling lead screw |
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