CN203390656U - Device for examining if cutting tool is ruptured or worn - Google Patents

Device for examining if cutting tool is ruptured or worn Download PDF

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Publication number
CN203390656U
CN203390656U CN201320226977.6U CN201320226977U CN203390656U CN 203390656 U CN203390656 U CN 203390656U CN 201320226977 U CN201320226977 U CN 201320226977U CN 203390656 U CN203390656 U CN 203390656U
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China
Prior art keywords
cutting tool
cutter
mcu
camera
processing chip
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Expired - Fee Related
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CN201320226977.6U
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Chinese (zh)
Inventor
王忠勇
马超
宋豫全
邓计才
高向川
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Zhengzhou University
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Zhengzhou University
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Priority to CN201320226977.6U priority Critical patent/CN203390656U/en
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Abstract

The utility model discloses a device for examining if a cutting tool is ruptured or worn, concretely relates to an image processing system based on computer vision technology, and aims to solve the technical problems that defective products are easy to produce, raw materials are wasted, equipment is easy to break and costs are high when cutting tools for CNC machine, such as turning tools, are ruptured or worn. The device comprises a cutting tool examination camera for taking photos of a cutting tool to be examined, photos taken by the cutting tool examination camera are sent into a video decoder in a machine case, the video decoder is connected to an image processing chip, the image processing chip is connected with a micro control unit (MCU), and the MCU is connected with a man-machine interface, a proximity switch sensor and a storage. With adoption of the abovementioned structure, whether the cutting tool is ruptured or worn can be rapidly and accurately examined, the defective products and wastes on raw materials can be reduced, and the whole examination process is low in cost, simple to operate, accurate in examination, and economical on manpower, material resources and financial resources.

Description

A kind of equipment that checks whether cutting tool ruptures or wear and tear
Technical field
The utility model relates to a kind of equipment that checks whether cutting tool ruptures or wear and tear, and is specifically related to a kind of image processing system whether cutting tool ruptures or wear and tear that judges based on computer vision technique.
Background technology
Cutting tool belongs to running stores in machining, easily in use there is wearing and tearing and fracture, and along with the raising of automaticity, increasing process does not need people on duty, during this period, once there are fracture and the wearing and tearing of metal cutting tool, not only can produce defective products, waste raw material, even can damage equipment when serious, so find in time the extremely most important of cutter.For screw tap and drill bit-like cutter, conventionally use the tip of Fibre Optical Sensor detection screw tap or drill bit, but this Fibre Optical Sensor is helpless to the cutter of the types such as lathe tool; Monitoring for cutting tool for CNC machines such as lathe tools, normally by the variation of axial drive current or vibration energy in detection process, and the mode that monitor value is compared with known set model realizes monitoring function, but this mode cost is higher, during detection, be easily subject to the impact of electrical network situation, be of limited application.
Utility model content
The technical problems to be solved in the utility model be in machining, easily produce defective products when the fracture of the cutting tool for CNC machine such as lathe tool or wearing and tearing, waste raw material, equipment is fragile and whether the cutting tool for CNC machine such as original inspection lathe tool ruptures or the method and apparatus cost that wear and tear is higher, provide a kind of with low cost, simple to operate, detect the equipment whether inspection cutting tool accurate, that have wide range of applications ruptures or wear and tear.
For achieving the above object, the utility model adopts following technical proposals: a kind of equipment that checks whether cutting tool ruptures or wear and tear, and it comprises that the cutter that cutter to be measured is taken pictures checks camera; Described cutter inspection camera is sent into the picture of shooting in the Video Decoder in cabinet, and Video Decoder is connected with picture processing chip, and picture processing chip connects MCU, and MCU is connected with man-machine interface, approach switch sensor and memory.
Described cutter checks that camera comprises CCD or cmos imaging device and camera lens.
Described MCU is connected with the light source that irradiates cutter to be measured, and light source is at least a LED.
Described Video Decoder andlogic control module, crystal oscillator, power supply and cutter check that camera is connected.
Described memory adopts FLASH and SRAM, and SRAM is that picture processing chip and MCU share.
Described MCU is connected with alarm, and alarm is three look audible-visual annunciators.
Adopt the utility model of technique scheme, cutting tool is in machining, in the situation that nobody is on duty, also can be checked through fast and accurately cutter whether wearing and tearing and fracture occur, change in time cutter, reduce the generation of defective products, the waste of minimizing raw material, whole checking process is with low cost, simple to operate, detection is accurate, is that applying unit is saved human and material resources, financial resources.
Accompanying drawing explanation
Fig. 1 is device structure schematic diagram of the present utility model.
Fig. 2 is the inner formation of master control case of the present utility model schematic diagram;
Fig. 3 is main program flow chart of the present utility model.
Fig. 4 is cutter detection algorithm flow chart of the present utility model.
Fig. 5 is that the utility model is used flow chart.
The specific embodiment
As depicted in figs. 1 and 2, the utility model comprises a kind of equipment that checks whether cutting tool ruptures or wear and tear, and it comprises that the cutter that cutter 3 to be measured is taken pictures checks camera 2; Described cutter inspection camera 2 is sent into the picture of shooting in the Video Decoder in cabinet 5, and Video Decoder is connected with picture processing chip, and picture processing chip connects MCU, and MCU is connected with man-machine interface, sensor and memory.
Described cutter checks that camera 2 comprises CCD or cmos imaging device and camera lens, and when lathe entry into service, when cutter arrives detection position, this camera can be taken the picture of cutter, and the treatment circuit sending it in cabinet 5 is processed and judgement; Cabinet 5, as shown in Figure 1, provide man-machine interface for user, system to be arranged, the functional circuit that inside comprises is controlled whole system, and to the processing of obtained cutter image and judgement, specifically: provide man-machine interface, so that user arranges whole detection system parameters; Control interface to lathe is provided, can controls lathe start and stop; The image that cutter inspection camera is caught processes, extracts the feature to be compared of cutter and normal Cutter templet that arrange or renewal automatically is compared, if cutter non-cracking or wearing and tearing, lathe continues normal operation, if there are fracture or wearing and tearing in cutter, stop lathe and continue operation, and report to the police.
Described MCU is connected with the light source (1) that irradiates cutter to be measured (3), and light source (1) is at least a LED, and the illuminating ray that checks that when whether cutter ruptures or wear and tear, camera needs is provided, and conventionally need to adopt a plurality of LED according to actual conditions.
Described Video Decoder andlogic control module, crystal oscillator, power supply and cutter check that camera is connected.
Described memory adopts FLASH and SRAM, and SRAM is that picture processing chip and MCU share, and realizes communication between the two.
Described MCU is connected with alarm 7, and alarm 7 is three look audible-visual annunciators.
Below in conjunction with Fig. 3, Fig. 4, Fig. 5, the utility model is described further:
As shown in Figure 5, need first equipment to carry out integral body inspection before use, the scope of examination comprises: watch whether exact connect ion of power line and holding wire, especially whether circuit has broken skin, burns part.Whether checkout facility all parts and screw have loosening phenomenon.If all are normal, can open device power supply (DPS), enter user pattern is set.
On lathe, regulate light source, cutter to check the position of camera Cutting tool installation manner, generally with magnet base, be fixed on lathe, regulate cutter to check aperture and the focal length of camera, make the cutter that shows on monitor the most clear, feature to be compared exposes the most obvious.
User arranges under pattern, because adopting the method for comparison, the utility model judges that whether cutter is normal, what therefore user need arrange to the effect that arranges normal Cutter templet and formulates comparison feature, concrete operations are: manually take the cutter image under a width normal condition, arrange and need the comparison feature of extracting and compare the parameter in feature in man-machine interface.
After lathe normal operation, when each machine tool arrives detecting position, cutter checks camera shooting cutter picture and is sent to the treatment circuit of cabinet inside, through Video Decoder, its effect is that video is converted into digital quantity and is effectively encoded by analog quantity, make video compile the form that can directly process for picture processing chip, transmit into video frequency processing chip, video frequency processing chip operation preprocessor, pretreatment specifically comprises: image noise reduction is processed, and the picture noise of removing the kinds such as salt-pepper noise by methods such as medium filtering, average value filterings pollutes; Image histogram is balanced, and making original image histogram transformation is to have the histogram that uniform density distributes, and is obtained the global contrast of image to increase; Image sharpening, by the method for mask convolution and frequency domain filtering, strengthens the edge of image and the part of Gray Level Jump, makes image become clear.Extract afterwards feature to be compared in cutter picture, normally histogram information, marginal information and area information etc., and the computing of comparing of the feature of normal Cutter templet, generally adopt the methods such as template matches or neutral net to realize.
Wherein, normal Cutter templet is manually arranged before machine tool running by user, or according to new algorithm more, automatically upgrades in machine tool running.The MCU of Circuits System mainly moves man-machine interface, and the communication port with picture processing chip is provided, and configuration information is passed to picture processing chip, and lathe on off control and warning function are provided.
In the utility model, can be used in the metal cutting tool of the types such as lathe tool, milling cutter, broaching tool, screw tap, drill bit.

Claims (4)

1. check the equipment whether cutting tool ruptures or wear and tear, it is characterized in that: it comprises that the cutter that cutter to be measured (3) is taken pictures checks camera (2); Described cutter inspection camera (2) is sent into the picture of shooting in the Video Decoder in cabinet (5), and Video Decoder is connected with picture processing chip, and picture processing chip connects MCU, and MCU is connected with man-machine interface, approach switch sensor and memory; Described Video Decoder andlogic control module, crystal oscillator, power supply and cutter check that camera is connected; Described MCU is connected with alarm (7), and alarm (7) is three look audible-visual annunciators.
2. a kind of equipment that checks whether cutting tool ruptures or wear and tear according to claim 1, is characterized in that: described cutter checks that camera (2) comprises CCD or cmos imaging device and camera lens.
3. a kind of equipment that checks whether cutting tool ruptures or wear and tear according to claim 1, is characterized in that: described MCU is connected with the light source (1) that irradiates cutter to be measured (3), and light source (1) is at least a LED.
4. the equipment that whether inspection cutting tool according to claim 1 ruptures or wear and tear, is characterized in that: described memory adopts FLASH and SRAM, and SRAM is that picture processing chip and MCU share.
CN201320226977.6U 2013-04-28 2013-04-28 Device for examining if cutting tool is ruptured or worn Expired - Fee Related CN203390656U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320226977.6U CN203390656U (en) 2013-04-28 2013-04-28 Device for examining if cutting tool is ruptured or worn

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320226977.6U CN203390656U (en) 2013-04-28 2013-04-28 Device for examining if cutting tool is ruptured or worn

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CN203390656U true CN203390656U (en) 2014-01-15

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108776457A (en) * 2018-07-20 2018-11-09 安徽江机重型数控机床股份有限公司 A kind of numerically-controlled machine tool cutter head fault diagnosis system
CN109304741A (en) * 2018-12-07 2019-02-05 宁波宝尼尔厨具电器有限公司 Interior cutter head incompleteness degree indicates system
CN109350092A (en) * 2018-12-06 2019-02-19 余姚德诚科技咨询有限公司 Intensity occurs and selects platform
CN111168470A (en) * 2018-11-12 2020-05-19 湘潭大学 Machine tool cutter fault testing system
CN111906692A (en) * 2020-07-28 2020-11-10 惠科股份有限公司 Edge grinding machine, method and device for measuring allowance of grinding material of edge grinding machine and storage medium
RU205531U1 (en) * 2021-03-25 2021-07-19 Общество с ограниченной ответственностью Управляющая компания "Алтайский завод прецизионных изделий" DEVICE FOR MONITORING THE CUTTING EDGE OF THE TOOL

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108776457A (en) * 2018-07-20 2018-11-09 安徽江机重型数控机床股份有限公司 A kind of numerically-controlled machine tool cutter head fault diagnosis system
CN111168470A (en) * 2018-11-12 2020-05-19 湘潭大学 Machine tool cutter fault testing system
CN109350092A (en) * 2018-12-06 2019-02-19 余姚德诚科技咨询有限公司 Intensity occurs and selects platform
CN109304741A (en) * 2018-12-07 2019-02-05 宁波宝尼尔厨具电器有限公司 Interior cutter head incompleteness degree indicates system
CN111906692A (en) * 2020-07-28 2020-11-10 惠科股份有限公司 Edge grinding machine, method and device for measuring allowance of grinding material of edge grinding machine and storage medium
CN111906692B (en) * 2020-07-28 2022-03-29 惠科股份有限公司 Edge grinding machine, method and device for measuring allowance of grinding material of edge grinding machine and storage medium
RU205531U1 (en) * 2021-03-25 2021-07-19 Общество с ограниченной ответственностью Управляющая компания "Алтайский завод прецизионных изделий" DEVICE FOR MONITORING THE CUTTING EDGE OF THE TOOL

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Granted publication date: 20140115

Termination date: 20140428