CN217832925U - Cutting knife handle detecting system - Google Patents
Cutting knife handle detecting system Download PDFInfo
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- CN217832925U CN217832925U CN202220077801.8U CN202220077801U CN217832925U CN 217832925 U CN217832925 U CN 217832925U CN 202220077801 U CN202220077801 U CN 202220077801U CN 217832925 U CN217832925 U CN 217832925U
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Abstract
The utility model belongs to the technical field of cutting tool, a cutting handle of a knife detecting system is disclosed, locate the outer first external member and the second external member of cutting handle of a knife including sensor, controller, power supply unit and cover, can be independent of the cutting handle of a knife, need not reform transform the structure of cutting handle of a knife itself. Through being fixed in the cutting handle of a knife respectively with first external member and second external member on, the sensor is installed on first external member, controller and power supply unit install respectively on the second external member, the controller is supplied power by power supply unit, sensor and controller electric connection, for the independent installation carrier of sensor configuration like this, make sensor and controller, other devices such as power supply unit not have direct relevance, can keep apart the vibration of other devices, and then can reduce the vibration interference that the sensor received to improve and detect the accuracy.
Description
Technical Field
The utility model belongs to the technical field of cutting tool, concretely relates to cutting handle of a knife detecting system.
Background
Cutting is the most important manufacturing means and the most basic technical capability of the manufacturing industry. The cutting machine and the tool are the most important indexes for measuring the state processing technology level. The intelligent monitoring of the cutting process is a key technical link for realizing intelligent manufacturing. Along with the continuous improvement of labor cost and the continuous improvement of automation of the manufacturing process, the dependence of the processing process on people is smaller and smaller. Under the unattended condition, the timely and effective process intelligent monitoring technology is the basis of automatic adjustment of the cutting process state and is also an important guarantee for the safety of cutting equipment. The intelligent cutting process monitoring technology can effectively sense the real-time state of the machining process and equipment in real time, guide the adjustment of process technological parameters and optimize the product quality. When equipment failure or performance degradation is found, early warning can be timely given, and when danger is found, measures can be timely taken to protect the safety of equipment and products. Therefore, the development of an effective machine tool machining state monitoring system has very important significance for ensuring the machining quality of products, protecting the safety of equipment and improving the intelligent level of a machine tool.
In the prior art, the acceleration sensor is usually wired, so that the acceleration sensor can only be mounted on a fixed machine tool or a workpiece, and the wear of the tool is indirectly monitored through the vibration of the workpiece or the machine tool. For example, chinese patent application publication No. CN110091215A discloses "a wireless transmission intelligent knife handle system for monitoring milling force and vibration in real time". In the system, a force measuring sensor and a vibration sensor are arranged in an inner cavity of a tool handle, so that force and vibration monitoring in the milling process is realized.
However, the force sensor and the vibration sensor are both built in the inner cavity of the tool holder, the tool holder needs to be redesigned and machined, the size of the inner cavity is increased, the strength of the tool holder is weakened, and the tool holder system with the weakened strength is not suitable under the working conditions of large machining force such as rough machining.
Based on this, chinese patent publication No. CN109001996B proposes an intelligent tool holder system for tool information management, which encapsulates a tool information collection and storage unit in a carrier ring, and then sleeves the carrier ring on a cylindrical portion fixed at the lower end of the tool holder, thereby avoiding modifying the structure of the tool holder.
However, the tool information acquisition and storage unit mainly comprises a single chip microcomputer, a sensor, a power circuit and the like, which are packaged together in the carrier ring, and along with the vibration of the tool holder, the single chip microcomputer, the power circuit and other devices except the sensor can also vibrate relative to the carrier ring and directly transmit the vibration to the sensor, so that the sensor is greatly interfered by the vibration and the detection is not accurate enough.
Disclosure of Invention
An object of the utility model is to provide a cutting handle of a knife detecting system both can be independent of the cutting handle of a knife, need not reform transform the structure of cutting handle of a knife itself, can reduce the vibration interference that the sensor received again to improve and detect the accuracy.
In order to achieve the above object, the utility model provides a cutting knife handle detection system, which comprises a sensor, a controller, a power supply device, a first external member and a second external member, wherein the first external member and the second external member are sleeved outside the cutting knife handle; the first sleeve and the second sleeve are respectively fixed on the cutting tool handle, the sensor is installed on the first sleeve, the controller and the power supply device are respectively installed on the second sleeve, the controller is powered by the power supply device, and the sensor is electrically connected with the controller.
In some embodiments, the first kit is provided with a supporting portion, the sensor is mounted on the supporting portion, two ends of the supporting portion in the length direction of the cutting tool shank are respectively a first side and a second side, and the distance between the supporting portion and the cutting tool shank is gradually reduced from the first side to the second side.
In some embodiments, a cavity is formed in the second member, and the controller and the power supply device are respectively mounted on the inner side wall of the cavity.
In some embodiments, the first sleeve is located within the cavity of the second sleeve.
In some embodiments, the cutting tool further comprises a support member, and the second sleeve member is fixed to the cutting tool shank by the support member.
In some embodiments, a first port and a second port are respectively arranged at two ends of the second kit in the length direction of the cutting tool handle, the first port is provided with a sealing cover, the sealing cover is provided with an avoiding through groove, the cutting tool handle is located in the avoiding through groove, and the support member is located in the second port.
In some embodiments, the supporting member is a supporting plate, the supporting plate is provided with a limiting through groove penetrating through two surfaces, and the supporting plate is sleeved outside the cutting tool shank through the limiting through groove and is fixedly connected with the cutting tool shank.
In some embodiments, the center of the limiting through groove is close to or coincident with the axis of the support plate.
In some embodiments, a first mounting hole is formed in the outer edge of the supporting plate, the first mounting hole is communicated with the limiting through groove, and the supporting plate is fixed on the cutting tool shank through the first mounting hole.
In some embodiments, the outer edge of the supporting plate is further provided with a second mounting hole, and the second sleeve member is fixed on the supporting plate through the second mounting hole.
The beneficial effects of the utility model reside in that, the cutting handle of a knife detecting system that provides includes that sensor, controller, power supply unit and cover locate the outer first external member of cutting handle of a knife and second external member, can be independent of the cutting handle of a knife, need not reform transform the structure of cutting handle of a knife itself. Moreover, the first sleeve and the second sleeve are respectively fixed on the cutting tool handle, the sensor is installed on the first sleeve, the controller and the power supply device are respectively installed on the second sleeve, the controller is powered by the power supply device, and the sensor is electrically connected with the controller.
Drawings
FIG. 1 is a schematic perspective view of a cutting tool shank detection system;
FIG. 2 is a schematic view of the mounting structure of the cutting tool shank detection system;
FIG. 3 is a front view of a cutting tool shank detection system;
FIG. 4 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 3;
FIG. 5 is a sectional view taken in the direction B-B in FIG. 3;
FIG. 6 is an exploded view of static values of centrifugal acceleration.
Description of the reference numerals:
10. a sensor; 20. a controller; 30. a power supply device; 40. a first kit; 41. a fourth mounting hole; 42. a first side; 43. a second side; 50. a second kit; 51. a sealing cover; 52. opening and closing the window; 53. a charging window; 54. a third mounting hole; 60. a support plate; 61. a first mounting hole; 62. a second mounting hole; 70. and (4) screws.
Detailed Description
In order to facilitate an understanding of the invention, specific embodiments thereof will be described in more detail below with reference to the accompanying drawings.
As used herein, unless otherwise specified or defined, "first, \ 8230," is used merely to distinguish between names, and does not denote a particular quantity or order.
As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items, unless specified or otherwise defined.
It should be noted that "fixed to" or "connected to" in this document may be directly fixed to or connected to one element or may be indirectly fixed to or connected to one element.
As shown in fig. 1 to 5, an embodiment of the present invention discloses a cutting tool handle detection system, which includes a sensor 10, a controller 20, a power supply device 30, and a first kit 40 and a second kit 50 sleeved outside the cutting tool handle; the first sleeve member 40 and the second sleeve member 50 are respectively fixed on the cutting tool shank, the first sleeve member 40 and the second sleeve member 50 are not in contact, the sensor 10 is installed on the first sleeve member 40, the controller 20 and the power supply device 30 are respectively installed on the second sleeve member 50, the controller 20 is powered by the power supply device 30, and the sensor 10 is electrically connected with the controller 20. The controller 20, the sensor 10 and the power supply device 30 are electrically connected and communicated with each other by signal transmission wires, and the power supply device 30 is an energy storage battery, including but not limited to a lithium battery.
The detection system can be independent of the cutting knife handle, and the structure of the cutting knife handle is not required to be modified. And through for the sensor configuration independent installation carrier, make sensor and other devices such as controller, power supply unit have not direct relevance, can isolate the vibration of other devices, the vibration of other devices can not directly transmit to the sensor, and because the inertia of cutting handle of a knife is far more than the inertia of other devices, can prevent to a great extent that the vibration of other devices from transmitting to the sensor through the cutting handle of a knife, and then can reduce the vibration interference that the sensor received to improve and detect the accuracy.
The controller 20 includes a signal acquisition module, a Serial Peripheral Interface (SPI) communication module, a data storage module, a wireless communication module, and a battery charging module, which are connected to each other through a printed circuit to transmit and convert signals.
The controller 20 can be in wireless communication with a mobile terminal that is also equipped with a wireless communication module. Therefore, the mobile terminal can receive the vibration signal of the time domain monitored by the detection system in real time and convert the vibration signal of the time domain into the vibration signal of the frequency domain in real time. The mobile terminal is also provided with a display module, and the display module displays the converted vibration signal of the frequency domain in real time to realize automatic and visual monitoring of the machining process of a numerical control (CNC) machine tool.
In addition, through the wireless communication mode like Wi-Fi or bluetooth, can be so that this detecting system mounted position on the cutting handle of a knife is unrestricted, can not influence normal cutting process, and the cutting handle of a knife both can normally carry out product processing production and can carry out experiment vibration measurement again, is applicable to the operating condition of cutting handle of a knife more.
The second kit 50 has a cavity therein, and the controller 20 and the power supply unit 30 are respectively mounted on the inner side walls of the cavity. For example, mounting sockets corresponding to the controller 20 and the power supply device 30 are disposed on the inner side wall of the cavity, and the controller 20 and the power supply device 30 can be fixed in the second kit 50 by being clamped in the mounting sockets. The second sleeve 50 is made of transparent material, so that the condition of devices inside the second sleeve 50 can be conveniently seen.
In order to improve the transmission efficiency of the vibration signal, the material of the first sleeve 10 is made of steel or aluminum. On the contrary, the second sleeve 50 is made of resin material because the vibration transmissivity of the resin material is low, which on the one hand can further reduce the influence of the vibration of other devices on the vibration of the sensor 10, and on the other hand is beneficial for the controller 20 to transmit the measured vibration signal to the mobile terminal through wireless communication. The second sleeve 50 has a complex structural design, and requires a low natural frequency and a low vibration transmission efficiency, and is usually formed by 3D printing.
Considering that the first sleeve member 40 and the second sleeve member 50 are arranged in the front-back direction of the cutting tool shank, the space is occupied, and therefore the first sleeve member 40 can be arranged in the cavity of the second sleeve member 50, and the structure is more compact.
Preferably, in this embodiment, the first sleeve 40 and the second sleeve 50 are cylindrical sleeves, and the radial dimension of the second sleeve 50 is greater than that of the first sleeve 40, so that the first sleeve 40 can enter the cavity of the second sleeve 50 through one of the ports of the second sleeve 50.
Although the first sleeve 40 is located within the cavity of the second sleeve 50, the two are still not in contact. The first sleeve member 40 may be directly fixedly attached to the cutting tool shank, while the second sleeve member 50 may be secured to the cutting tool shank by a support member. It should be noted that the support member is not in contact with the first kit 40.
The support member includes, but is not limited to, a support frame, a support plate, or a support rod, etc. to serve as a connecting member between the second sleeve 50 and the cutting tool shank in a radial direction, to fixedly connect the second sleeve 50 to the cutting tool shank, and to support the weight of the second sleeve 50 and its internal components. To improve the stability, the supporting element is usually made of steel or aluminum.
The two ends of the second sleeve 50 in the length direction of the cutting tool shank are respectively provided with a first port and a second port. In other possible embodiments, two supporting members may be provided, and the two supporting members are respectively provided in the first port and the second port and are respectively used for realizing the fixed connection between the first port and the cutting tool shank and the fixed connection between the second port and the cutting tool shank.
In this embodiment, the second sleeve 50 is a semi-sealed ring type, and therefore only one supporting member is provided, the supporting member is located in the second port closer to the bottom of the cutting tool shank, the first port farther from the bottom of the cutting tool shank is provided with the sealing cover 51, the sealing cover 51 and the second sleeve 50 are integrally formed to seal the first port, the sealing cover 51 is provided with an avoiding through groove, the radial size of the avoiding through groove is slightly larger than that of the cutting tool shank, and the avoiding through groove can just be passed through by the cutting tool shank. Through setting up sealed lid, can strengthen the leakproofness, prevent that the dust from dropping the circuit work that influences the device.
The sealing cover 51 may further have a switch window 52, and the switch window 52 may be configured to be away from a switch button of the controller 20, so that the button is exposed out of the surface of the sealing cover 51, thereby facilitating the user to open and close. Further, a charging window 53 is further disposed on the second kit 50 at a position corresponding to the power supply device 30, and the charging window 53 can expose a charging interface of the power supply device 30 for facilitating charging.
In this embodiment, the supporting member is specifically a supporting plate 60, the supporting plate 60 is provided with a limiting through groove penetrating through both surfaces, and the supporting plate 60 is sleeved outside the cutting tool shank through the limiting through groove and is fixedly connected with the cutting tool shank.
In other possible embodiments, the center of the limiting through slot may be located at a position on the supporting plate 60 that is offset from the axial center. In order to prevent the support plate 60 from generating asymmetric centrifugal acting force in the radial direction when the cutting tool shank rotates at a high speed, the center of the limiting through groove should be as close as possible to or overlapped on the axial center of the support plate 60. In this embodiment, the center of the limiting through groove is preferably overlapped with the axis of the supporting plate 60.
In this embodiment, the outer edge of the supporting plate 60 is provided with a first mounting hole 61, the first mounting hole 61 is communicated with the limiting through groove, and the supporting plate 60 can be fixed on the cutting tool shank by installing a fastener, such as a screw 70, in the first mounting hole 61.
In addition, a second mounting hole 62 is formed on the outer edge of the supporting plate 60, a third mounting hole 54 is formed on the edge of the second port of the second sleeve 50, and the third mounting hole 54 is matched with the second mounting hole 62. The second kit 50 is fixed to the supporting plate 60 by fixing the second mounting hole 62 and the third mounting hole 54 together by screws 70.
The first mounting holes 61 and the second mounting holes 62 are distributed at intervals in the circumferential direction of the support plate 60, and three first mounting holes 61 and three second mounting holes 62 are respectively provided. The three first mounting holes 61 are through holes communicated with the limiting through grooves and used for fixing the supporting plate 60 on the cutting tool shank. The three second mounting holes 62 are blind holes for connecting the second kit 50 with the support plate 60.
In this embodiment, the sensor 10 is a three-axis acceleration sensor, and is capable of measuring acceleration signals in three axis directions of X, Y, and Z, and is provided with an a/D conversion module therein, and is capable of converting the acceleration signals into digital signals and directly outputting the converted digital signals in the three axis directions of X, Y, and Z. The triaxial acceleration sensor includes, but is not limited to, capacitive, inductive, strain, piezoresistive, or piezoelectric type sensors. Of course, the sensor 10 is not limited to a three-axis acceleration sensor, and may be other vibration sensors capable of detecting vibration.
When the cutting tool shank rotates at a high speed, a large centrifugal acceleration is generated, and vibration of the cutting tool shank can be monitored by dynamically and/or statically detecting the centrifugal acceleration. The static value of the centrifugal acceleration generated by the centrifugal acceleration is used as the measured value of the three-axis acceleration sensor. As can be seen from the following formula (1), the static value A of the centrifugal acceleration along with the increase of the rotating speed of the cutting tool shank C Increase in two times. Once the measurement value exceeds the measurement range of the three-axis acceleration sensor, the three-axis acceleration sensor is overranged and cannot be used. Therefore, the rotation speed of the cutting tool holder is limited to a certain extent in order to prevent the cutting tool from being unusable due to the overranging.
A C ＝ω 2 r (1)
In the formula, r represents the installation radius of the three-axis acceleration sensor, namely the distance between the three-axis acceleration sensor and the axis of the cutting tool shank; ω represents the rotational speed of the cutting tool shank.
In this embodiment, the first sleeve 40 is provided with a middle hole, the first sleeve 40 is sleeved on the cutting tool shank through the middle hole, the outer edge of the first sleeve 40 is provided with a fourth mounting hole 41, the fourth mounting hole 41 is communicated with the middle hole, and the first sleeve 40 can be fixed on the cutting tool shank by installing a screw 70 in the fourth mounting hole 41.
Compared with the prior art that the carrier of the sensor is sleeved on the tool handle chuck with the model number of BT40-ER32-100L, the carrier needs a larger middle aperture close to 50 mm due to the larger size of the tool handle chuck, in the embodiment, the first sleeve member 40 is directly sleeved on the cutting tool handle, and a smaller middle aperture can be set, for example, the diameter of the middle aperture of the first sleeve member 40 is about 25 mm and is far smaller than 50 mm. Therefore, the installation radius of the triaxial acceleration sensor can be reduced, the static value of the centrifugal acceleration is further reduced, the measurement range of the triaxial acceleration sensor can be increased to a certain extent, and the rotating speed limit of the cutting tool handle is reduced.
Further, the first kit 40 is provided with a support portion on which the sensor 10 may be mounted by ceramic glue or resin glue. The number of the supporting parts is at least two, so that the sensor 10 can be conveniently added when needed. The two ends of the support portion in the length direction of the cutter holder are a first side 42 and a second side 43, respectively, and the distance between the support portion and the cutter holder gradually decreases from the first side 42 to the second side 43.
Wherein the first side 42 may be closer to the bottom of the cutting tool shank than the second side 43, i.e. the support surface of the support portion is arranged upwardly; alternatively, the second side 43 may be closer to the bottom of the cutting tool shank than the first side 42, i.e. the support surface of the support portion is arranged obliquely downwards. In this embodiment, in order to prevent the sensor 10 from falling off the support, it is preferable to use a configuration in which the first side 42 is closer to the bottom of the cutting tool shank than the second side 43, i.e., the support surface of the support is inclined upward.
When the support surface of the support portion is disposed obliquely, as can be seen from the geometrical relationship shown in fig. 6, the radial centrifugal acceleration static value a can be obtained by the following equations (2) and (3) C Decomposed into acceleration offsets A in the Y-axis direction Y And an acceleration offset A in the Z-axis direction Z And A is Y And A Z Are all less than A C 。
A Y ＝A C cosθ (2)
A Z ＝A C sinθ (3)
In the formula, θ represents an angle between the support surface and the horizontal plane.
Therefore, compared with the method that the static value of the centrifugal acceleration is directly used as the measured value, the possibility that the measured value exceeds the measuring range of the three-axis acceleration sensor can be reduced to a certain extent by using the smaller acceleration offset decomposed on the two measuring axes as the measured value, in other words, the measuring range of the three-axis acceleration sensor can be further increased, and the rotating speed limit of the cutting tool shank is reduced.
Implement the embodiment of the utility model provides a, the rotational speed of cutting handle of a knife can reach 1600 revolutions per minute, and triaxial acceleration sensor adopts the model to be MPU 9250's sensor chip, and its sampling rate can reach 4000 Hertz, and the range has 40g.
The size of the structural part of the cutting tool handle detection system can be adaptively adjusted according to the sizes of an installation object (namely, the cutting tool handle) and various devices (such as a controller, a sensor and the like). In addition, the connection mode between the first sleeve and the cutting knife handle, the connection mode between the second sleeve and the support piece, the connection mode between the support piece and the cutting knife handle and the like are not limited to threaded connection, and detachable connection modes such as buckle connection and the like can be adopted, so that the installation and the detachment are convenient.
The above examples are not intended to be exhaustive list of the present invention, and there may be many other embodiments not listed. Any replacement and improvement made on the basis of not violating the conception of the utility model belong to the protection scope of the utility model.
Claims (10)
1. The cutting tool handle detection system is characterized by comprising a sensor, a controller, a power supply device, a first external member and a second external member, wherein the first external member and the second external member are sleeved outside the cutting tool handle; the first sleeve and the second sleeve are respectively fixed on the cutting tool handle, the sensor is installed on the first sleeve, the controller and the power supply device are respectively installed on the second sleeve, the controller is powered by the power supply device, and the sensor is electrically connected with the controller.
2. The cutting tool shank detection system of claim 1, wherein the first kit is provided with a support portion, the sensor is mounted on the support portion, the support portion has a first side and a second side at opposite ends of the support portion in the length direction of the cutting tool shank, and the distance between the support portion and the cutting tool shank is gradually reduced from the first side to the second side.
3. The system for detecting the shape of a cutting tool shank according to claim 1, wherein a cavity is formed in the second member, and the controller and the power supply unit are respectively mounted on the inner side wall of the cavity.
4. The cutting tool shank detection system of claim 3, wherein the first sleeve is located within the cavity of the second sleeve.
5. The cutting tool shank inspection system of any one of claims 1 to 4, further comprising a support member, the second kit being secured to the cutting tool shank by the support member.
6. The system for detecting the cutting tool handle according to claim 5, wherein a first port and a second port are respectively arranged at two ends of the second kit in the length direction of the cutting tool handle, a sealing cover is arranged at the first port, an avoiding through groove is formed in the sealing cover, the cutting tool handle is located in the avoiding through groove, and the supporting member is located in the second port.
7. The system for detecting the cutting tool shank according to claim 5, wherein the supporting member is a supporting plate, the supporting plate is provided with a limiting through groove penetrating through two surfaces, and the supporting plate is sleeved outside the cutting tool shank through the limiting through groove and is fixedly connected with the cutting tool shank.
8. The system for detecting the cutting tool shank according to claim 7, wherein the center of the limiting through groove is close to or coincides with the axis of the support plate.
9. The system for detecting the cutting tool shank according to claim 7, wherein a first mounting hole is formed in the outer edge of the supporting plate, the first mounting hole is communicated with the limiting through groove, and the supporting plate is fixed to the cutting tool shank through the first mounting hole.
10. The system for detecting the shape of a cutting tool shank according to claim 7, wherein the support plate further comprises a second mounting hole formed in an outer edge thereof, and the second sleeve member is fixed to the support plate through the second mounting hole.
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| CN202220077801.8U CN217832925U (en) | 2022-01-12 | 2022-01-12 | Cutting knife handle detecting system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117470308A (en) * | 2023-10-31 | 2024-01-30 | 北京理工大学珠海学院 | Cutting heat and vibration measuring device, method, computer device, and storage medium |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117470308A (en) * | 2023-10-31 | 2024-01-30 | 北京理工大学珠海学院 | Cutting heat and vibration measuring device, method, computer device, and storage medium |
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