CN114623780B - Detection device and online detection method for three-dimensional reconstruction of tool nose - Google Patents
Detection device and online detection method for three-dimensional reconstruction of tool nose Download PDFInfo
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- CN114623780B CN114623780B CN202210096531.XA CN202210096531A CN114623780B CN 114623780 B CN114623780 B CN 114623780B CN 202210096531 A CN202210096531 A CN 202210096531A CN 114623780 B CN114623780 B CN 114623780B
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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
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
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Abstract
The invention discloses a detection device and an online detection method for three-dimensional reconstruction of a tool nose, wherein the detection device comprises a clamping piece and a bracket for supporting the clamping piece; the clamping part is provided with a clamping part for fixing the shooting device; the clamping piece is provided with a rotating fulcrum, and the clamping piece can rotate around the rotating fulcrum to adjust the inclination angle of the clamping piece; the clamping piece is also provided with a linear motion mechanism, and the linear motion mechanism controls the clamping part to linearly move along the axis of the shooting device fixed on the clamping part; and a driving device for driving the linear motion mechanism is also arranged. The inclination angle of the clamping piece is adjusted by setting the rotating pivot, and the shooting device can shoot the sequence image of the tool nose along the linear movement of the inclination angle by setting the linear movement mechanism and the driving device, so that the sequence image of the tool nose is shot on line, and the three-dimensional reconstruction of the tool nose is realized on line.
Description
Technical Field
The invention relates to the technical field of cutter detection, in particular to a cutter tip three-dimensional reconstruction detection device and an online detection method.
Background
Along with the high-speed development of manufacturing industry, the dependence on the machine tool is stronger, the accuracy achieved by the machine tool is higher, and meanwhile, the requirement on a cutter required by machining is higher. The surface quality and the precision of a product are not up to standard due to the fact that milling cutter tipping often occurs in machine tool machining, secondary reworking is needed, and even the product is directly abandoned, so that unnecessary loss and expenditure are caused.
The tool nose is a main grinding damage part of the milling cutter in the processing process, and the grinding damage detection for the three-dimensional reconstruction of the tool nose is the most direct and effective method for detecting the service life of the tool. Because the cutter point sequence image shot at an oblique angle with the cutter shaft is required to be acquired when the cutter point is reconstructed in a three-dimensional way, the cutter on the machine tool cannot be inclined, the existing image shooting device cannot directly shoot, and the cutter is required to be taken down and installed on the shooting device for shooting. Therefore, the cutter point image cannot be shot on line, the on-line rapid detection cannot be realized, and the processing efficiency is affected.
Accordingly, there is a need for improvement and development in the art.
Disclosure of Invention
The invention mainly aims to provide a detection device and an online detection method for three-dimensional reconstruction of a tool nose, and aims to solve the problems that in the prior art, a tool nose sequence image cannot be shot online and the three-dimensional reconstruction of the tool nose cannot be realized online.
In order to achieve the above object, the present invention provides a detection device for three-dimensional reconstruction of a tip, wherein the detection device includes:
a clamping member and a bracket for supporting the clamping member;
the clamping part is provided with a clamping part for fixing the shooting device;
the clamping piece is provided with a rotating fulcrum, and the clamping piece can rotate around the rotating fulcrum to adjust the inclination angle of the clamping piece;
the clamping piece is also provided with a linear motion mechanism, and the linear motion mechanism controls the clamping part to linearly move along the axis of the shooting device fixed on the clamping part;
the clamping piece is also provided with a driving device for driving the linear motion mechanism.
Optionally, the clamping piece is further provided with a fixing seat for fixing the auxiliary light source in front of the shooting device.
Optionally, the fixing base includes the base and is used for fixed auxiliary light source's footstock, the footstock with the base is connected, the footstock set up in the place ahead of base, the base with clamping part is connected.
Optionally, a manual screw and a first knob are arranged between the top seat and the base, the top seat is installed on the manual screw, and the first knob controls the manual screw to rotate so that the top seat moves linearly.
Optionally, the top seat is provided with a gear and a linear rack which are coupled, and a second knob for controlling the gear is further provided, and the second knob controls the gear to be rotationally meshed with the linear rack so as to enable the top seat to linearly move.
Optionally, two opposite flanges are arranged on the bracket, a rotating shaft is arranged between the flanges, the clamping piece is fixed on the rotating shaft, a rotating fulcrum is formed by the connecting point of the clamping piece and the rotating shaft, and a rotating knob for controlling the rotating shaft to rotate is further arranged.
Optionally, the linear motion mechanism is a ball screw, the clamping part is connected to a nut of the ball screw, and a stepping motor connected with the ball screw is further provided, and the stepping motor is the driving device.
Optionally, be equipped with montant and horizontal pole on the support, the holder with the horizontal pole is connected, the horizontal pole can be in on the montant vertical movement, still be equipped with on the horizontal pole and prevent the locking bolt of horizontal pole vertical movement.
Optionally, the clamping piece is provided with a control part, the control part is provided with the linear motion mechanism and the rotating fulcrum, and a connecting rod is arranged between the clamping part and the control part.
From the above, the detection device for the three-dimensional reconstruction of the tool nose comprises a clamping piece and a bracket for supporting the clamping piece; the clamping part is provided with a clamping part for fixing the shooting device; the clamping piece is provided with a rotating fulcrum, and the clamping piece can rotate around the rotating fulcrum to adjust the inclination angle of the clamping piece; the clamping piece is also provided with a linear motion mechanism, and the linear motion mechanism controls the clamping part to linearly move along the axis of the shooting device fixed on the clamping part; and a driving device for driving the linear motion mechanism is also arranged. Compared with the prior art, the technical scheme of the invention adjusts the inclination angle of the clamping piece by arranging the rotating pivot, and enables the shooting device to shoot the sequence image of the tool nose by linearly moving along the inclination angle by arranging the linear motion mechanism and the driving device, thereby realizing the on-line shooting of the sequence image of the tool nose and the on-line three-dimensional reconstruction of the tool nose.
In order to achieve the above object, the second aspect of the present invention further provides an online detection method for three-dimensional reconstruction of a tip, where the online detection method includes:
acquiring coordinate data of the tool nose according to the tool size data based on a machine tool coordinate system;
acquiring coordinate data and an inclination angle of a shooting device based on the coordinate data of the tool nose;
acquiring a moving step length of the shooting device according to the precision of the shooting device based on the coordinate data of the shooting device and the tool tip coordinate data;
controlling the shooting device to move along the inclination angle based on the moving step length to obtain a cutter point sequence image;
and obtaining a three-dimensional reconstruction result of the tool tip according to a focusing method based on the tool tip sequence image.
From the above, the online detection method for the three-dimensional reconstruction of the tool nose of the scheme of the invention controls the shooting device to move and shoot along the inclination angle by determining the coordinates, the inclination angle and the moving step length of the shooting device, thereby realizing online shooting of sequence images of the tool nose and online realization of the three-dimensional reconstruction of the tool nose.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a first schematic diagram of a detection device for three-dimensional reconstruction of a tool nose according to an embodiment of the present invention;
FIG. 2 is a second schematic diagram of a detection device for three-dimensional reconstruction of a tool nose according to an embodiment of the present invention;
FIG. 3 is a schematic flow chart of an online detection method for three-dimensional reconstruction of a tool nose according to an embodiment of the present invention;
fig. 4 is a schematic block diagram of an internal structure of an intelligent terminal according to an embodiment of the present invention.
Reference numerals illustrate:
10. the device comprises a bracket, 11, a flange, 13, a turning knob, 15, a cross rod, 16, a vertical rod, 17, a locking bolt, 18, a bottom plate, 20, a clamping piece, 21, a clamping part, 23, a linear motion mechanism, 24, a stepping motor, 25, a ball screw, 26, a control part, 27, a connecting rod, 28, a flange, 30, an auxiliary light source, 31, a top seat, 32, a base, 33, a manual screw, 34, a coarse tuning knob, 35, a linear rack, 36, a fine tuning knob, 40, a microscope, 50 and a machine tool guide rail.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, techniques, etc., in order to provide a thorough understanding of the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
It should be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.
As used in this specification and the appended claims, the term "if" may be interpreted in context as "when …" or "upon" or "in response to a determination" or "in response to detection. Similarly, the phrase "if a condition or event described is determined" or "if a condition or event described is detected" may be interpreted in the context of meaning "upon determination" or "in response to determination" or "upon detection of a condition or event described" or "in response to detection of a condition or event described".
The following description of the embodiments of the present invention will be made more fully hereinafter with reference to the accompanying drawings, in which embodiments of the invention are shown, it being evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present invention is not limited to the specific embodiments disclosed below.
Along with the high-speed development of manufacturing industry, the dependence on the machine tool is stronger, the accuracy achieved by the machine tool is higher, and meanwhile, the requirement on a cutter required by machining is higher. The surface quality and the precision of a product are not up to standard due to the fact that milling cutter tipping often occurs in machine tool machining, secondary reworking is needed, and even the product is directly abandoned, so that unnecessary loss and expenditure are caused.
The tool nose is a main grinding damage part of the milling cutter in the processing process, and the grinding damage detection for the three-dimensional reconstruction of the tool nose is the most direct and effective method for detecting the service life of the tool. Because the cutter point sequence image shot at an oblique angle with the cutter shaft is required to be acquired when the cutter point is reconstructed in a three-dimensional way, the cutter on the machine tool cannot be inclined, the existing image shooting device cannot directly shoot, and the cutter is required to be taken down and installed on the shooting device for shooting. Therefore, the cutter point image cannot be shot on line, the on-line rapid detection cannot be realized, and the processing efficiency is affected.
According to the technical scheme, the inclination angle of the clamping piece is adjusted by setting the rotating pivot, and the shooting device can linearly move along the inclination angle to shoot the sequence image of the tool nose by setting the linear motion mechanism and the driving device, so that the sequence image of the tool nose is shot online, and the three-dimensional reconstruction of the tool nose is realized online.
Exemplary apparatus
As shown in fig. 1 and fig. 2, an embodiment of the present invention provides a detection device for three-dimensional reconstruction of a tip, where the detection device mainly includes two parts: a clamping member 20 and a bracket 10 supporting the clamping member 20.
The support 10 can be fixed on the machine tool guide 50, and the support 10 can be moved on the machine tool guide 50 to the obliquely lower side of the tool to be detected. It should be noted that, the specific shape of the support 10 is not limited, the support 10 may also be fixed on an external workbench beside the machine tool, and the support 10 is driven to move to an obliquely lower side of the tool to be detected by the movement of the external workbench.
Specifically, the bracket 10 in this embodiment is fixed on the machine tool guide rail 50 through the bottom plate 18, a vertical rod 16 and a cross rod 15 are provided on the bracket 10, the vertical rod 16 is fixed on the bottom plate 18, one end of the cross rod 15 is provided with a through hole, and the cross rod 15 is sleeved on the vertical rod 16 through the through hole and can move up and down along the vertical rod 16 to change the height of the cross rod 15. As the height of the cross bar 15 changes, the height of the clamp 20 secured to the cross bar 15 changes. The cross bar 15 is further provided with a locking bolt 17, and when the height of the cross bar 15 is adjusted in place, the locking bolt 17 is tightly pressed against the vertical rod 16, so that the position of the cross bar 15 is locked, and the cross bar 15 is prevented from sliding up and down.
Wherein, the clamping part 21 for fixing the shooting device is arranged on the clamping piece 20. In the three-dimensional reconstruction of the cutting edge, the imaging device is generally the microscope 40, and therefore the holding portion 21 is preferably in a circular band shape, and the holding portion 21 is clamped to the outer periphery of the microscope 40 to fix the microscope 40 to the holding portion 21. Of course, the holding portion 21 may have other shapes, such as a rectangular shape, and a through hole for passing the microscope is provided at the center thereof, so as to pinch the microscope 40.
In the case of three-dimensional reconstruction of the blade edge, it is necessary to take an image of the blade edge obliquely, and therefore, the imaging device needs to set a certain inclination angle. The specific value of the inclination angle varies depending on the type of the tool and the dimensional data of the tool. In order to tilt the photographing device, the present invention provides a rotation pivot on the clamping member 20, and the rotation pivot is connected to the bracket 10, so that the clamping member 20 can rotate around the rotation pivot to adjust the tilting angle of the clamping member 20, and the photographing device fixed on the clamping portion 21 when the clamping member 20 rotates can also adjust the tilting angle.
Specifically, in the present embodiment, the clip 20 is attached to the cross bar 15 of the bracket 10. Two opposite flanges 11 are arranged at the end parts of a cross rod 15 of the bracket 10, a through hole is formed in the center of each flange 11, a rotatable rotating shaft is arranged between the two through holes, one end of each rotating shaft is fixedly connected with a rotating knob 13, and the rotating knob 13 can control the rotating shaft to rotate. A flange 28 is correspondingly disposed on the clamping member 20, and the flange 28 is fixed on the rotating shaft, when the rotating shaft rotates, the clamping member 20 is driven to rotate by taking the fixed point fixed on the rotating shaft as a rotation pivot, so that the inclination angle of the clamping member 20 is adjusted.
In order to take a sequential image of the cutting edge and reconstruct the cutting edge in three dimensions, the present invention further provides a linear motion mechanism 23 on the holder 20, and the linear motion mechanism 23 controls the holder 21 to move linearly, specifically, since the axis of the imaging device is at a certain inclination angle, the imaging device is fixed on the holder 21, and the holder 21 moves linearly along the axis of the imaging device. Since the linear motion mechanism 23 is automatically moved in accordance with a predetermined movement step, a driving device connected to the linear motion mechanism 23 is also provided. Common linear motion mechanisms are: slider-crank mechanism, cam mechanism, rack-and-pinion mechanism and ball screw mechanism etc..
Specifically, in this embodiment, a ball screw 25 is used as the linear motion mechanism 23, the clamping portion 21 is fixedly connected to a nut of the ball screw 25, the ball screw 25 is connected to a stepper motor 24, and the ball screw 25 is driven by the stepper motor 24, so that the clamping portion 21 is driven to linearly move. The clamping member 21 in this embodiment is provided with a control portion 26, and the linear motion mechanism 23 and the mechanism for adjusting the inclination angle are both provided on the control portion 26. A connecting rod 27 is provided between the clamping portion 21 and the control portion 26.
Further, in order to obtain a better photographing effect, the fixing base for installing the auxiliary light source 30 is arranged on the clamping piece 20, the auxiliary light source 30 is fixed in front of the photographing device through the fixing base, preferably, the axis of the auxiliary light source 30 coincides with the axis of the photographing device, and the detecting device looks more beautiful.
Specifically, the fixing base in this embodiment includes a base 32 and a top base 31 for fixing the auxiliary light source, where the top base 31 is located in front of the base 32 and connected to the base 32, and the base 32 is connected to the clamping portion 21. The front auxiliary light source 30 supplements light to the knife edge region, so that the shot image is clearer.
Further, in order to adjust the intensity of illumination to the tip region, in this embodiment, a manual screw 33 and a rough adjustment knob 34 are further provided between the top base 31 and the base 32, the top base 31 is mounted on the manual screw 33, and when the manual screw 33 rotates, the top base 31 moves linearly and reciprocally. The coarse adjustment knob 34 is connected to the manual screw 33, and when the coarse adjustment knob 34 is rotated, the manual screw 33 is rotated to drive the top seat 31 to linearly move.
On the basis of the rough adjustment of the movement of the auxiliary light source 30, the present embodiment further provides a fine adjustment function of the movement of the auxiliary light source 30. Specifically, the top seat 31 is provided with a gear and a linear rack 35 which are coupled, and a fine adjustment knob 36 for controlling the rotation of the gear, so that the top seat 31 moves linearly through the rotational engagement of the gear and the linear rack 35.
In summary, the detection device for three-dimensional reconstruction of a tool nose in this embodiment includes a clamping member and a bracket for supporting the clamping member; the clamping part is provided with a clamping part for fixing the shooting device; the clamping piece is provided with a rotating fulcrum, and the clamping piece can rotate around the rotating fulcrum to adjust the inclination angle of the clamping piece; the clamping piece is also provided with a linear motion mechanism, and the linear motion mechanism controls the clamping part to linearly move along the axis of the shooting device fixed on the clamping part; and a driving device for driving the linear motion mechanism is also arranged. The device is used for shooting sequence images of the tool nose of the tool in the machine tool, then a focusing method is used for carrying out corresponding three-dimensional reconstruction on the wear area of the tool nose, and finally, a three-dimensional morphology graph of the wear area of the tool can be obtained, so that the wear area of the tool can be reproduced, and the worn volume can be accurately measured. The method realizes the online shooting of sequence images of the tool nose, the online three-dimensional reconstruction of the tool nose and the detection of the abrasion degree.
Exemplary method
The tool nose wear is the wear on the tool nose arc rear tool face and the adjacent auxiliary rear tool face, and is the continuation of the wear of the rear tool face on the tool. Because of the poor heat dissipation conditions and concentrated stress, the wear rate is faster than that of the flank face, and a series of small grooves with a pitch equal to the feed amount are sometimes formed in the sub-flank face, which is called groove wear. They are mainly due to the hardened layer of the machined surface and the cutting lines. The cutting work hardening tends to be more difficult to cut, and the grooving wear is most likely to occur. The tool nose abrasion has the greatest influence on the surface roughness and the machining precision of the workpiece.
As shown in fig. 3, the embodiment of the invention further provides an online detection method for three-dimensional reconstruction of a tool tip, corresponding to the detection device for three-dimensional reconstruction of the tool tip, and the method specifically comprises the following steps:
step S100: acquiring coordinate data of the tool nose according to the tool size data based on a machine tool coordinate system;
step S200: acquiring coordinate data and an inclination angle of the shooting device based on the coordinate data of the tool nose;
specifically, the coordinate data of the tool nose refers to the coordinate data of the tool nose in a machine tool coordinate system, the coordinate data of the tool shaft is obtained according to a machine tool PLC controller, and then the coordinate data of the tool nose is obtained through calculation according to the size data of the tool. After the coordinate data of the tool nose is obtained, the shooting device needs to be arranged obliquely below the tool nose, and the coordinate data and the inclination angle of the shooting device are calculated according to the size data, such as the length, width and height data, of the detection device provided with the shooting device. Of course, the accuracy of the imaging device varies, and the external dimensions thereof vary, so that it is necessary to incorporate the external dimension data of the imaging device during calculation.
Step S300: acquiring a moving step length of the shooting device according to the precision of the shooting device based on the coordinate data of the shooting device and the tool tip coordinate data;
specifically, according to the coordinate data of the shooting device and the knife tip coordinate data, the initial distance between the shooting device and the knife tip is calculated, and according to the accuracy of the shooting device, the termination distance between the shooting device and the knife tip is calculated, and the termination position of the movement of the shooting device is determined. And calculating the moving step length of the shooting device according to the initial distance, the ending distance and the number of images of the shot sequence images.
Step S400: based on the moving step length, controlling the shooting device to move along the inclined angle to obtain a cutter point sequence image;
specifically, in this embodiment, according to the moving step, the working parameter of the stepper motor is set to drive the ball screw to rotate to control the microscope to move along the set inclination angle, and the moving is performed while the tool tip is shot, so as to obtain the sequence image of the tool tip.
Step S500: and obtaining a three-dimensional reconstruction result of the tool nose according to a focusing method based on the tool nose sequence image.
Specifically, after the sequence image of the tool nose is obtained, the three-dimensional reconstruction of the tool nose is completed by adopting the existing focusing method, the volume of the reconstructed three-dimensional model is calculated, the difference of the calculated volumes of the two models is analyzed according to the pre-calculated volume of the three-dimensional model when the tool nose is intact, and the wear degree of the tool nose is analyzed.
In this embodiment, specific functions of the online detection method for the three-dimensional reconstruction of the tool tip may refer to corresponding descriptions in the detection device for the three-dimensional reconstruction of the tool tip, which are not described herein again.
Based on the above embodiment, the present invention further provides an intelligent terminal, and a functional block diagram thereof may be shown in fig. 4. The intelligent terminal comprises a processor, a memory, a network interface and a display screen which are connected through a system bus. The processor of the intelligent terminal is used for providing computing and control capabilities. The memory of the intelligent terminal comprises a nonvolatile storage medium and an internal memory. The nonvolatile storage medium stores an operating system and an online detection program for three-dimensional reconstruction of the tool nose. The internal memory provides an environment for the operation of an operating system and an online detection program for the three-dimensional reconstruction of the tool nose in a nonvolatile storage medium. The network interface of the intelligent terminal is used for communicating with an external terminal through network connection. And the on-line detection program for the three-dimensional reconstruction of the tool nose realizes the step of the on-line detection method for the three-dimensional reconstruction of the tool nose when being executed by a processor. The display screen of the intelligent terminal can be a liquid crystal display screen or an electronic ink display screen.
It will be appreciated by those skilled in the art that the schematic block diagram shown in fig. 4 is merely a block diagram of a portion of the structure associated with the present inventive arrangements and is not limiting of the smart terminal to which the present inventive arrangements are applied, and that a particular smart terminal may include more or fewer components than shown, or may combine some of the components, or have a different arrangement of components.
In one embodiment, there is provided an intelligent terminal, the intelligent terminal including a memory, a processor, and an online detection program for three-dimensional reconstruction of a nose stored in the memory and executable on the processor, the online detection program for three-dimensional reconstruction of a nose being executed by the processor performing the following operation instructions:
acquiring coordinate data of the tool nose according to the tool size data based on a machine tool coordinate system;
acquiring coordinate data and an inclination angle of a shooting device based on the coordinate data of the tool nose;
acquiring a moving step length of the shooting device according to the precision of the shooting device based on the coordinate data of the shooting device and the tool tip coordinate data;
controlling the shooting device to move along the inclination angle based on the moving step length to obtain a cutter point sequence image;
and obtaining a three-dimensional reconstruction result of the tool tip according to a focusing method based on the tool tip sequence image.
The embodiment of the invention also provides a computer readable storage medium, wherein the computer readable storage medium stores an online detection program of the three-dimensional reconstruction of the tool nose, and the online detection program of the three-dimensional reconstruction of the tool nose realizes the steps of any online detection method of the three-dimensional reconstruction of the tool nose provided by the embodiment of the invention when being executed by a processor.
It should be understood that the sequence number of each step in the above embodiment does not mean the sequence of execution, and the execution sequence of each process should be determined by its function and internal logic, and should not be construed as limiting the implementation process of the embodiment of the present invention.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of the functional units and modules is illustrated, and in practical application, the above-described functional distribution may be performed by different functional units and modules according to needs, i.e. the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-described functions. The functional units and modules in the embodiment may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit, where the integrated units may be implemented in a form of hardware or a form of a software functional unit. In addition, the specific names of the functional units and modules are only for distinguishing from each other, and are not used for limiting the protection scope of the present invention. The specific working process of the units and modules in the above system may refer to the corresponding process in the foregoing method embodiment, which is not described herein again.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and in part, not described or illustrated in any particular embodiment, reference is made to the related descriptions of other embodiments.
Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the examples described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus/terminal device and method may be implemented in other manners. For example, the apparatus/terminal device embodiments described above are merely illustrative, e.g., the division of the modules or units described above is merely a logical function division, and may be implemented in other manners, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed.
The integrated modules/units described above, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer-readable storage medium. Based on such understanding, the present invention may implement all or part of the flow of the method of the above embodiment, or may be implemented by a computer program to instruct related hardware, where the computer program may be stored in a computer readable storage medium, and when the computer program is executed by a processor, the steps of each method embodiment may be implemented. The computer program comprises computer program code, and the computer program code can be in a source code form, an object code form, an executable file or some intermediate form and the like. The computer readable medium may include: any entity or device capable of carrying the computer program code described above, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer Memory, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), an electrical carrier signal, a telecommunications signal, a software distribution medium, and so forth. The content of the computer readable storage medium can be appropriately increased or decreased according to the requirements of the legislation and the patent practice in the jurisdiction.
The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that; the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions are not intended to depart from the spirit and scope of the various embodiments of the invention, which are also within the spirit and scope of the invention.
Claims (2)
1. The detection device for the three-dimensional reconstruction of the tool nose is characterized by comprising:
a clamping member and a bracket for supporting the clamping member;
the clamping part is provided with a clamping part for fixing the shooting device;
the clamping piece is provided with a rotating fulcrum, and the clamping piece can rotate around the rotating fulcrum to adjust the inclination angle of the clamping piece; the support is provided with a vertical rod and a cross rod, the clamping piece is connected with the cross rod, the cross rod can vertically move on the vertical rod, and the cross rod is also provided with a locking bolt capable of preventing the cross rod from vertically moving; the end part of the cross rod of the bracket is provided with two opposite flanges, a rotating shaft is arranged between the flanges, the clamping piece is fixed on the rotating shaft, the connecting point of the clamping piece and the rotating shaft forms the rotating fulcrum, and a rotating knob for controlling the rotating shaft to rotate is also arranged;
the clamping piece is also provided with a linear motion mechanism, and the linear motion mechanism controls the clamping part to linearly move along the axis of the shooting device fixed on the clamping part;
the clamping piece is also provided with a driving device for driving the linear motion mechanism;
the linear motion mechanism and the driving device are used for enabling the shooting device to move linearly along the inclined angle so as to shoot a sequence image of the tool nose;
the clamping piece is provided with a control part, the control part is provided with the linear motion mechanism and the rotating fulcrum, a connecting rod is arranged between the clamping part and the control part, and the clamping part can move linearly relative to the control part;
the clamping piece is also provided with a fixing seat for fixing the auxiliary light source in front of the shooting device;
the fixing seat comprises a base and a top seat for fixing an auxiliary light source, the top seat is connected with the base, the top seat is arranged in front of the base, and the base is connected with the clamping part;
a manual screw rod and a coarse adjustment knob are arranged between the top seat and the base, the top seat is arranged on the manual screw rod, and the coarse adjustment knob controls the manual screw rod to rotate so that the top seat moves linearly;
the top seat is provided with a gear and a linear rack which are coupled, and is also provided with a fine adjustment knob for controlling the gear to rotate, and the fine adjustment knob controls the gear to be rotationally meshed with the linear rack so as to enable the top seat to linearly move;
when the top seat moves linearly, the auxiliary light source fixed on the top seat moves along with the top seat so as to adjust the illumination intensity of the knife point area;
when the detection device for the three-dimensional reconstruction of the tool nose is used for carrying out online detection, the detection device comprises:
acquiring coordinate data of the tool nose according to the tool size data based on a machine tool coordinate system;
acquiring coordinate data and an inclination angle of a shooting device based on the coordinate data of the tool nose;
acquiring a moving step length of the shooting device according to the precision of the shooting device based on the coordinate data of the shooting device and the tool tip coordinate data;
controlling the shooting device to move along the inclination angle based on the moving step length to obtain a cutter point sequence image;
and obtaining a three-dimensional reconstruction result of the tool tip according to a focusing method based on the tool tip sequence image.
2. The apparatus for detecting three-dimensional reconstruction of a cutting edge according to claim 1, wherein the linear motion mechanism is a ball screw, the clamping portion is connected to a nut of the ball screw, and a stepping motor connected to the ball screw is further provided, and the stepping motor is the driving apparatus.
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