Producing and machining device for precision parts

Abstract

The invention relates to the technical field of part machining, in particular to a precise part producing and machining device. The device comprises a shaping station for shaping the surface of a workpiece, a detection station for detecting the surface quality of the workpiece, and a removal station for removing unqualified workpieces and conveying qualified workpieces to the next detection station, the removing station comprises a removing part and a power source for driving the removing part to swing; the guide rail is installed on the stroke of one side of the removing piece, the sliding strip is installed on the guide rail in a sliding mode, the gear is in transmission connection with the sliding strip, and the overturning groove is coaxially connected with the gear. The collecting box is arranged on the stroke of the other side of the removing part; according to the invention, ground workpieces can be detected, and workpieces with quality problems can be rejected, or workpieces without quality problems can be conveyed to the next station.

Description

Technical Field

[0001] The invention relates to the technical field of parts processing, and in particular to a production and processing device for precision parts. Background Art

[0002] Powder metallurgy is a process technology for manufacturing metal materials, composite materials and various types of products. In the powder metallurgy process, the raw materials are first prepared, and the metal powder and lubricant are evenly mixed in proportion; then the raw materials are pressed into blanks at room temperature through a powder molding machine; the blanks are then degreased; the degreased blanks are then quickly sintered from a low temperature into a high temperature environment; the workpiece is then preliminarily shaped according to the shape of the finished product and the waste is picked out; the shaped workpiece is then sintered a second time in a high temperature environment to obtain a semi-finished product; the semi-finished product is then refined and shaped, and unqualified products are removed; for example, powder metallurgy gears used in precision machinery often require grinding to achieve the design accuracy and surface finish in order to ensure the accuracy of their tooth surfaces and good meshing performance.

[0003] The invention with application number CN202110128960.6 provides a visual inspection device and method for grinding castings, including a grinding device body and a visual inspection component, wherein the visual inspection component includes an industrial camera and a line laser sensor that cooperates with the industrial camera, wherein the industrial camera and the line laser sensor are both connected to a host computer and fixedly mounted on the body; the lens axis of the industrial camera and the axis of the line laser sensor are on the same plane, and the angle between the two axes is 45°. The visual inspection device and method for grinding castings described in the above invention combine industrial cameras and line lasers to perform visual inspection of standard castings and castings to be processed, and can perform intelligent grinding processing on workpieces of different sizes and models in combination with processing procedures.

[0004] However, although this patent can grind workpieces of different models, it is unable to inspect the workpieces after grinding and eliminate workpieces with quality problems.

[0005] Therefore, it is necessary to provide a new technical solution to overcome the above-mentioned defects. Summary of the invention

[0006] The object of the present invention is to provide a production and processing device for precision parts which can effectively solve the above-mentioned technical problems.

[0007] In order to achieve the purpose of the present invention, the following technical scheme is adopted:

[0008] A production and processing device for precision parts, comprising: a shaping station for shaping the surface of a workpiece, a testing station for testing the surface quality of the workpiece, a rejecting station for rejecting unqualified workpieces and conveying qualified workpieces to the next testing station;

[0009] The rejecting station comprises: a rejecting piece and a power source for driving the rejecting piece to swing;

[0010] A guide rail installed on one side of the rejecting member, a slide bar slidably installed on the guide rail, a gear transmission-connected to the slide bar, and a turning groove coaxially connected to the gear; a collection box provided on the other side of the rejecting member;

[0011] When the rejecting member swings toward the collecting box, the unqualified workpieces are pushed toward the collecting box; when the rejecting member swings in the opposite direction, the qualified workpieces are pushed toward the turning groove, and then the turning groove is turned.

[0012] Furthermore, an abutment rod is fixedly mounted on the slide bar; when the rejecting member approaches the abutment rod, the abutment rod abuts against the rejecting member.

[0013] Furthermore, the rejecting member includes: a main body portion drivingly connected to the power source, a rejecting portion fixedly mounted on the swinging end of the main body portion, and a shock absorbing portion mounted on the other end of the main body portion.

[0014] Furthermore, a conveying track for conveying the workpiece to the next workstation is provided on the unloading side of the turning trough;

[0015] The conveying track includes: a guide rail, a collection tray slidably mounted on the guide rail, an abutment block hinged to one end of the collection tray facing the mounting seat, a limit block for limiting the rotation direction of the abutment block, and a torsion spring installed inside the limit block;

[0016] When the rejecting member rotates, the shock absorbing part pushes the collecting tray toward the unloading side of the turning groove.

[0017] Furthermore, the shaping station includes: a fixing assembly for fixing the workpiece, and a polishing assembly for polishing the workpiece; the fixing assembly includes: two symmetrically arranged telescopic cylinders, and a fixing block fixedly connected to the piston rods of the telescopic cylinders;

[0018] The fixed block is composed of a connection end connected to the telescopic cylinder, a rotating end rotatably connected to the connection end, and a first motor driving the rotating end.

[0019] Furthermore, the polishing assembly includes: a polishing head, a second motor driving the polishing head to polish, and a three-axis moving module driving the polishing head to move in three axes.

[0020] Further, the inspection station includes: a front inspection station for inspecting the workpiece, and a rear inspection station for inspecting the turned workpiece;

[0021] The reject station comprises: a front reject station adapted to the front detection station, and a rear reject station adapted to the rear detection station;

[0022] The front detection station, the front rejection station, the conveying track, the rear detection station, and the rear rejection station are arranged in sequence.

[0023] Furthermore, the front inspection station includes: a detection module for capturing images of the workpiece in real time, a processing module for extracting and processing the image information of the workpiece measured by the detection module in real time, and rejecting or conveying the workpiece to the next process according to the processing result.

[0024] Furthermore, the processing module processes the following steps:

[0025] S1, standard model of training artifacts;

[0026] S2, extracting the image information of the workpiece measured in real time by the detection module, preprocessing the image information, and comparing the image information with the standard model; the image information includes: edge feature information and surface feature information;

[0027] If it is unqualified, controlling the rejection module to reject the workpiece;

[0028] If the test is qualified, execute step S3;

[0029] S3, dividing the image information into a plurality of moving windows, wherein two adjacent moving windows intersect each other; enlarging the images in the moving windows respectively, and performing secondary detection on the enlarged images.

[0030] Furthermore, in step S3, the secondary detection includes:

[0031] S31, collecting historical test data, and sorting the problems in the historical test data according to the frequency of occurrence;

[0032] S32, detecting the images in the moving window one by one according to the order in the sorting;

[0033] If the detection result of any movable window is unqualified, the rejection station is controlled to reject the workpiece into the collection box, and the corresponding detection data is packaged and stored as historical detection data;

[0034] If the detection results of all the movable windows are qualified, the rejection station is controlled to transport the workpiece to the next station.

[0035] Compared with the prior art, the present invention has the following beneficial effects: the present invention can detect the workpiece after grinding, and remove the workpiece with quality problems, or transport the workpiece without quality problems to the next workstation. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0037] Figure 1 is an isometric schematic diagram of the present invention;

[0038] Figure 2 It is a schematic diagram of the axial side of the present invention;

[0039] Figure 3 It is an axial schematic diagram of the shaping station of the present invention;

[0040] Figure 4 It is a structural schematic diagram of the present invention;

[0041] Figure 5 for Figure 4 A partial enlarged view of part A;

[0042] Figure 6 It is a schematic diagram of the structure of the detection station and the rejection station of the present invention;

[0043] Figure 7 for Figure 6 A partial enlarged view of part B;

[0044] Figure 8 It is a schematic diagram of the internal structure of the rejecting station of the present invention;

[0045] Fig. 9 It is a schematic diagram of the process of the present invention;

[0046] Fig.10 for Fig. 9 Schematic diagram of the process of step S3 in FIG.

[0047] In the figure: 1, shaping station; 2, inspection station; 3, rejection station; 11, fixed component; 12, polishing component; 111, telescopic cylinder; 112, fixed block; 1121, connecting end; 1122, rotating end; 121, polishing head; 122, second motor; 123, three-axis moving module; 21, front inspection station; 22, rear inspection station; 31, front rejection station; 32, rear rejection station; 311 , rejecting part; 312, power source; 313, turning groove; 314, conveying track; 315, collecting box; 316, guide rail; 3161, guide groove; 3162, slide bar; 3163, abutment rod; 3164, gear; 3111, main body; 3112, rejecting part; 3113, shock absorbing part; 3141, guide rail; 3142, collecting plate; 3143, abutment block; 3144, limit block. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are partial embodiments of the present invention, rather than all embodiments.

[0049] In the description of the present invention, it should be understood that the terms "center", "lateral", "longitudinal", "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention. When a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a centered component. When a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centered component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a centered component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0050] like Figures 1 to 10 As shown, a production and processing device for precision parts of the present invention comprises: a workbench, and arranged in sequence along the processing direction: a shaping station 1 for shaping the surface of a workpiece, an inspection station 2 for inspecting the surface quality of the workpiece, and a rejection station 3 for rejecting unqualified workpieces and conveying qualified workpieces to the next inspection station 2.

[0051] The shaping station 1 includes: a fixing component 11 for fixing the workpiece, and a polishing component 12 for polishing the workpiece; the fixing component 11 includes: two symmetrically arranged telescopic cylinders 111, and a fixing block 112 fixedly connected to the piston rod of the telescopic cylinder 111; the fixing block 112 is composed of a connecting end 1121 connected to the telescopic cylinder 111, the interior of the connecting end 1121 is hollow, a rotating end 1122 rotatably connected to the connecting end 1121, and a first motor installed inside the cavity of the connecting end 1121; the output shaft of the first motor is fixedly connected to the rotating end 1122, and is used to drive the rotating end 1122 and the connecting end 1121 to rotate relative to each other, thereby driving the workpiece to flip.

[0052] The polishing assembly 12 includes a polishing head 121 , a second motor 122 driving the polishing head 121 to polish, and a three-axis moving module 123 driving the second motor 122 and the polishing head 121 to move in three axes; the output shaft of the second motor 122 is connected to the polishing head 121 .

[0053] The inspection station 2 is divided into at least a front inspection station 21 and a rear inspection station 22. The front inspection station 21 is used to inspect the surface of the workpiece, and the rear inspection station 22 is used to inspect the surface of the workpiece after flipping. The front inspection station 21 and the rear inspection station 22 have the same structure. In this embodiment, the front inspection station 21 is used as an example for detailed description.

[0054] The reject station 3 includes a front reject station 31 matching the front detection station 21, and a rear reject station 32 matching the rear detection station 22; the front reject station 31 has the same structure as the rear reject station 32, and in this embodiment, the front reject station 31 is taken as an example for detailed introduction; the front detection station 21, the front reject station 31, the rear detection station 22, and the rear reject station 32 are arranged in sequence.

[0055] The front rejection station 31 includes: a machine table, a mounting base fixedly installed on the top of the machine table, a rejection piece 311 rotatably installed on the top of the mounting base, a power source 312 for driving the rejection piece 311 to swing, a turning groove 313 rotatably installed on the unloading end of the front rejection station 31, a conveying track 314 installed on the unloading end of the turning groove 313, and a collection box 315 fixedly installed on the front unloading end of the front rejection station 31; the power source 312 is preferably a motor, and the output end of the motor is fixedly connected to the rejection piece 311.

[0056] A guide rail 316 is installed on one side of the mounting seat, a guide groove 3161 is opened on the guide rail 316, a slide bar 3162 is slidably installed in the guide groove 3161, and the slide bar 3162 is connected to the abutment rod 3163; when the rejection member 311 rotates, the other end of the abutment rod 3163 contacts the rejection member 311; a gear 3164 is coaxially connected to the rotating shaft of the flip groove 313, and the gear 3164 is meshingly connected to the slide bar 3162.

[0057] The rejection part 311 includes: a main body 3111 transmission-connected to the power source 312, a rejection part 3112 fixedly mounted on the swinging end of the main body 3111, and a shock-absorbing part 3113 mounted on the other end of the main body 3111; a sub-magnetic part is fixedly mounted on the side of the rejection part 3112 close to the guide rail 316, and a female magnetic part matching the sub-magnetic part is mounted on the abutment rod 3163. The rejection part 3112 is magnetically connected to the abutment rod 3163 to facilitate the abutment of the abutment rod 3163, thereby driving the abutment rod 3163 to move, and then driving the slide bar 3162 to move; the design of the sub-magnetic parts and the female magnetic parts can not only drive the slide bar 3162 to slide along the guide groove 3161, but also drive the slide bar 3162 to reset.

[0058] The conveying track 314 includes: a guide rail 314, a collection plate 3142 slidably mounted on the guide rail 314, an abutment block 3143 hinged to one end of the collection plate 3142 toward the mounting seat, a limit block 3144 for limiting the rotation direction of the abutment block 3143, and a torsion spring installed inside the limit block 3144, wherein the torsion spring is used to drive the abutment block 3143 to reset; the end of the guide rail 314 close to the next workstation is tilted outward and downward, so that when the collection plate 3142 slides to this end, it tilts toward the direction of the next workstation, so that the workpiece in the collection plate 3142 can slide into the next workstation easily.

[0059] When the rejecting member 311 swings counterclockwise, the unqualified workpieces are pushed to the collection box 315 for collection. When the rejecting member 311 swings clockwise, the qualified workpieces are pushed to the flip groove 313, and then the rejecting member 311 is connected with the abutment rod 3163, driving the slide bar 3162 to move, thereby driving the flip groove 313 to flip, so that the workpiece flips along with the flip groove 313, and the workpiece is turned over and slides to the conveying track 314, which is not only convenient for the subsequent station to detect the other side of the workpiece, but also can transport the workpiece to the subsequent station; in the process of transporting to the flip plate, the other end of the rejecting member 311 drives the collection plate 3142 to move along the conveying track 314, so that the workpieces that have been inspected can enter the next station in sequence; after the inspection of one side of each workpiece is completed, on the one hand, the unqualified workpieces are screened, and on the other hand, the qualified workpieces on one side are pushed to the next inspection process, and the workpieces are turned over to facilitate the inspection of the other side of the workpiece.

[0060] The inspection contents of the front inspection station 21 and the rear inspection station 22 are the same, so the inspection time is almost the same. By feeding the materials one by one, the front inspection station 21 and the rear inspection station 22 can inspect the front and back sides of the workpiece respectively, which greatly reduces the inspection time and improves the overall inspection efficiency. In addition, since the unqualified rate of workpieces is very low, when large-scale workpieces are produced, even if unqualified products occasionally appear, it will not disrupt the entire inspection rhythm. It is like an assembly line where each link is closely connected, there is no idle waiting time, and production efficiency is maximized.

[0061] The front inspection station 21 includes: a detection module for capturing images of the workpiece in real time, and a processing module electrically connected to the detection module. The processing module extracts the image information of the workpiece measured by the detection module in real time, processes it, and controls the rejection station 3 to reject the workpiece into a collection box or transport it to the next process based on the processing result. The detection module is preferably an industrial camera or a visual inspection camera; the processing module is preferably a PLC controller.

[0062] The processing module extracts the image information of the workpiece measured in real time by the detection module and processes it as follows:

[0063] S1, standard model of training artifacts;

[0064] S11. Take several standard parts as training samples, build a training model, and train the equipment;

[0065] S12. Use several problematic workpieces as training samples to train the equipment, and mark the problems of each training sample, such as missing corners, cracks, scratches, thickness, etc. By using a large number of standard parts and problematic workpieces as training samples, the equipment can learn normal and abnormal features to help the equipment judge the quality of new inspection products.

[0066] S2, extracting the image information of the workpiece measured in real time by the detection module, preprocessing the image information, and comparing the image information with the standard model; the image information includes: edge feature information and surface feature information;

[0067] S21. Preset a coincidence threshold range according to the processing requirements of the workpiece; the coincidence threshold range includes: an edge coincidence threshold range and a surface coincidence threshold range;

[0068] S22, preprocessing includes: at least one of filtering, sharpening, and background removal;

[0069] S22, substituting the image information into the standard model to obtain the degree of coincidence between the image information and the standard model;

[0070] S23, if the overlap exceeds the threshold range, it is judged as unqualified; control the rejection station 3 to reject the workpiece into the collection box 315;

[0071] If the overlap is within the threshold, execute step S3;

[0072] S3, dividing the image information into a number of moving windows, and two adjacent moving windows intersect each other; enlarging the images in the moving windows respectively, and performing secondary detection on the enlarged images;

[0073] The overlap of the intersection is at least one quarter of the window size;

[0074] In step S3, the secondary detection includes:

[0075] S31. Collect historical test data and sort the problems in the historical data by frequency of occurrence;

[0076] S32, detecting the images in the moving window one by one according to the order in the sorting, which can shorten the detection time and improve the detection efficiency;

[0077] If the detection result of any moving window is unqualified, the rejection station 3 is controlled to reject the workpiece into the collection box 315, and the corresponding detection data is packaged and stored as historical detection data;

[0078] If the inspection results of all movable windows are qualified, the rejection station 3 is controlled to transport the workpiece to the next station; for example: if it is inspected by the front inspection station 21, the workpiece is transported to the conveying track 314; if it is inspected by the rear inspection station 22, the workpiece is transported to the unloading side, which is provided with a conveyor belt for unloading.

[0079] By training the standard model and combining it with preprocessing, overlap comparison, and secondary inspection with a moving window, comprehensive and detailed inspection can be performed from the whole to the part, greatly improving the accuracy of the inspection results. First, the entire part is inspected, and if it is unqualified, it is directly eliminated, which can improve the inspection efficiency and pre-screen for the secondary inspection. Then, through secondary inspection, tiny defects in precision parts can be discovered more accurately to ensure product quality.

[0080] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The content not described in detail in this specification belongs to the prior art known to professional and technical personnel in this field.

[0081] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. A production and processing device for precision parts, characterized in that: include: A shaping station for shaping the surface of the workpiece, an inspection station for inspecting the surface quality of the workpiece, and a rejection station for rejecting unqualified workpieces and conveying qualified workpieces to the next inspection station; The rejecting station comprises: a rejecting piece and a power source for driving the rejecting piece to swing; A guide rail installed on one side of the rejecting member, a slide bar slidably installed on the guide rail, a gear transmission-connected to the slide bar, and a turning groove coaxially connected to the gear; a collection box provided on the other side of the rejecting member; When the rejecting member swings toward the collecting box, the unqualified workpieces are pushed toward the collecting box; when the rejecting member swings in the opposite direction, the qualified workpieces are pushed toward the turning groove, and then the turning groove is turned.

2. A production and processing device for precision parts according to claim 1, characterized in that: An abutment rod is fixedly mounted on the slide bar; when the rejecting member approaches the abutment rod, the abutment rod abuts against the rejecting member.

3. A production and processing device for precision parts according to claim 2, characterized in that: The rejecting member comprises: a main body part drivingly connected to the power source, a rejecting part fixedly mounted on the swinging end of the main body part, and a shock absorbing part mounted on the other end of the main body part.

4. A production and processing device for precision parts as claimed in claim 3, characterized in that: The unloading side of the turning trough is provided with a conveying track for conveying the workpiece to the next station; The conveying track includes: a guide rail, a collection tray slidably mounted on the guide rail, an abutment block hinged to one end of the collection tray facing the mounting seat, a limit block for limiting the rotation direction of the abutment block, and a torsion spring installed inside the limit block; When the rejecting member rotates, the shock absorbing part pushes the collecting tray toward the unloading side of the turning groove.

5. A production and processing device for precision parts according to claim 1, characterized in that: The shaping station comprises: a fixing assembly for fixing the workpiece, and a polishing assembly for polishing the workpiece; the fixing assembly comprises: two symmetrically arranged telescopic cylinders, and a fixing block fixedly connected to the piston rods of the telescopic cylinders; The fixed block is composed of a connection end connected to the telescopic cylinder, a rotating end rotatably connected to the connection end, and a first motor driving the rotating end.

6. A production and processing device for precision parts according to claim 5, characterized in that: The polishing assembly includes: a polishing head, a second motor driving the polishing head to polish, and a three-axis moving module driving the polishing head to move in three axes.

7. A production and processing device for precision parts according to claim 4, characterized in that: The inspection stations include: a front inspection station for inspecting the workpiece, and a rear inspection station for inspecting the turned workpiece; The reject station comprises: a front reject station adapted to the front detection station, and a rear reject station adapted to the rear detection station; The front detection station, the front rejection station, the conveying track, the rear detection station, and the rear rejection station are arranged in sequence.

8. A production and processing device for precision parts according to claim 7, characterized in that: The front inspection station includes: an inspection module for taking images of workpieces in real time, a processing module for extracting and processing the image information of the workpieces measured by the inspection module in real time, and rejecting or conveying the workpieces to the next process according to the processing results.

9. A production and processing device for precision parts according to claim 8, characterized in that: The steps of processing by the processing module are as follows: S1, standard model of training artifacts; S2, extracting the image information of the workpiece measured in real time by the detection module, preprocessing the image information, and comparing the image information with the standard model; the image information includes: edge feature information and surface feature information; If it is unqualified, controlling the rejection module to reject the workpiece; If the test is qualified, execute step S3; S3, dividing the image information into a plurality of moving windows, wherein two adjacent moving windows intersect each other; enlarging the images in the moving windows respectively, and performing secondary detection on the enlarged images.

10. A production and processing device for precision parts according to claim 9, characterized in that: In step S3, the secondary detection includes: S31, collecting historical test data, and sorting the problems in the historical test data according to the frequency of occurrence; S32, detecting the images in the moving window one by one according to the order in the sorting; If the detection result of any movable window is unqualified, the rejection station is controlled to reject the workpiece into the collection box, and the corresponding detection data is packaged and stored as historical detection data; If the detection results of all the movable windows are qualified, the rejection station is controlled to transport the workpiece to the next station.

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