High-precision knife handle type probe

Abstract

The utility model discloses a high-precision knife handle type probe, which belongs to the technical field of processing detection and comprises a knife handle, a clamp holder with a containing cavity, a detection mechanism, a gasket, a power supply module and a signal processing module, the gasket, the power supply module and the signal processing module are sequentially arranged in the containing cavity along the direction deviating from the knife handle, and the clamp holder is connected with the knife handle; the power supply module is used for supplying power to the signal processing module, and the signal processing module is used for wirelessly communicating with a signal receiver in the CNC machine; the detection mechanism comprises a fixing frame and a detection assembly detachably connected with the fixing frame, and the fixing frame is connected with the clamping device; the detection assembly is respectively connected with the power supply module and the signal processing module, the detection assembly comprises N high-precision displacement sensors, and the numerical value range of N is 1-5. The utility model achieves the technical effects of reducing the cost and being beneficial to improving the production efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of processing and detection, and particularly relates to a high-precision tool handle type probe. Background Art

[0002] During the CNC machine tool processing, it is often necessary to use probes to detect various products to confirm the geometric features of the products, determine the processing benchmarks, and ensure that the clamping is in place. At present, in processing detection technology, probes such as Renishaw are usually used for detection, but these brand products are expensive, and there is a lack of cost-effective alternatives on the market, which will increase the production costs of enterprises. At the same time, traditional probes are usually connected to the control system of CNC machine tools through wires, which to a certain extent limits the flexibility and scope of use of the probes. The wired connection will also increase the complexity and maintenance difficulty of the system, which is not conducive to improving production efficiency.

[0003] Therefore, it is necessary to provide a new technical solution to solve the above technical problems. Utility Model Content

[0004] The technical problem to be solved by the utility model is that the cost is high and it is not conducive to improving the production efficiency.

[0005] In order to solve the above technical problems, the utility model provides a high-precision tool-handle type probe, which includes: a tool handle, a clamp having an accommodating cavity, a detection mechanism, and a gasket, a power module and a signal processing module are sequentially arranged in the accommodating cavity along a direction away from the tool handle, the clamp is connected to the tool handle; the power module is used to power the signal processing module, and the signal processing module is used to wirelessly communicate with a signal receiver in a CNC machine; the detection mechanism includes a fixed frame and a detection component detachably connected to the fixed frame, and the fixed frame is connected to the clamp; the detection component is respectively connected to the power module and the signal processing module, and the detection component includes N high-precision displacement sensors, and the numerical range of N is 1 to 5.

[0006] Optionally, when N is 5, the five high-precision displacement sensors include a first displacement sensor, a second displacement sensor, a third displacement sensor, a fourth displacement sensor and a fifth displacement sensor, the detection direction of the first displacement sensor is the X+ axis direction of the space, the detection direction of the second displacement sensor is the X- axis direction of the space, the detection direction of the third displacement sensor is the Y+ axis direction of the space, the detection direction of the fourth displacement sensor is the Y- axis direction of the space, and the detection direction of the fifth displacement sensor is the Z axis direction of the space.

[0007] Optionally, when N is 4, the four high-precision displacement sensors include a first displacement sensor, a second displacement sensor, a third displacement sensor, and a fourth displacement sensor. The detection direction of the first displacement sensor is the positive X-axis direction in space, the detection direction of the second displacement sensor is the negative X-axis direction in space, the detection direction of the third displacement sensor is the positive Y-axis direction in space, and the detection direction of the fourth displacement sensor is the negative Y-axis direction or the Z-axis direction in space.

[0008] Optionally, when N is 3, the three high-precision displacement sensors include a first displacement sensor, a second displacement sensor, and a third displacement sensor. The detection direction of the first displacement sensor is the positive X-axis direction in space, the detection direction of the second displacement sensor is the negative X-axis direction in space, and the detection direction of the third displacement sensor is the positive Y-axis direction or the negative Y-axis direction or the Z-axis direction in space.

[0009] Optionally, when N is 2, the two high-precision displacement sensors include a first displacement sensor and a second displacement sensor. The detection direction of the first displacement sensor is the positive X-axis direction in space, and the detection direction of the second displacement sensor is the negative X-axis direction or the positive Y-axis direction or the negative Y-axis direction or the Z-axis direction in space.

[0010] Optionally, when N is 1, the detection direction of the one high-precision displacement sensor is the positive X-axis direction or the negative X-axis direction or the positive Y-axis direction or the negative Y-axis direction or the Z-axis direction in space.

[0011] Optionally, the fixing bracket includes: a frame body having a hollow portion and a number of support members equal to the number of high-precision displacement sensors. The frame body is connected to the gripper, and the hollow portion communicates with the accommodation cavity; the support members are integrally formed with the frame body, and an installation groove communicating with the hollow portion is provided on the support members, and the high-precision displacement sensors are threadedly connected to the installation grooves.

[0012] Optionally, the distances between the detection ends of the high-precision displacement sensors and the fixing bracket are all equal; the detection accuracy error range of the high-precision displacement sensors is ±0.02 mm.

[0013] Optionally, the high-precision tool shank type probe further includes: a workbench and a base placed on the workbench. The base is used to place the object to be measured, and the base is located at the center of the workbench.

[0014] Optionally, the tool shank is connected to the spindle of the CNC machine tool; the signal receiver in the CNC machine and the signal processing module communicate by infrared or Bluetooth; the high-precision tool shank type probe further includes a numerical control machine tool controller, and the numerical control machine tool controller is connected to the signal receiver in the CNC machine.

[0015] Beneficial effects:

[0016] The utility model provides a high-precision tool shank type probe, which is connected with a tool shank through a holder with a receiving cavity. Inside the receiving cavity, a gasket, a power supply module and a signal processing module are sequentially arranged along the direction away from the tool shank. The power supply module is used to supply power to the signal processing module, and the signal processing module is used for wireless communication with a signal receiver in a CNC machine. In the detection mechanism, a fixing frame is connected with the holder, and a detection component is detachably connected with the fixing frame. The detection component is respectively connected with the power supply module and the signal processing module. The detection component includes N high-precision displacement sensors, and the value range of N is from 1 to 5. In this way, multiple high-precision displacement sensors are detachably assembled on the fixing frame, and different numbers of high-precision displacement sensors can be quickly replaced according to the actual needs of the object to be measured. At the same time, the power supply module and the signal processing module are integrated into the receiving cavity of the holder. The information collected by the high-precision displacement sensors is wirelessly transmitted to the signal receiver in the CNC machine through the signal processing module, reducing the limitation of external connection lines, thereby being able to reduce production costs and being beneficial to improving the convenience and production efficiency of the detection process. Thus, the technical effects of reducing costs and being beneficial to improving production efficiency are achieved. Brief description of the drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the following described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0018] Figure 1 It is a schematic structural diagram of a high-precision tool shank type probe provided by an embodiment of the present utility model.

[0019] Figure 2 It is a schematic structural diagram of the tool shank in the embodiment provided by the present utility model.

[0020] Figure 3 It is a schematic structural diagram of the gasket in the embodiment provided by the present utility model.

[0021] Figure 4 It is a schematic structural diagram of the power supply module and the signal processing module in the embodiment provided by the present utility model.

[0022] Figure 5 It is a schematic structural diagram of the detection mechanism in the embodiment provided by the present utility model.

[0023] Figure 6 It is a schematic structural diagram of the support member in the embodiment provided by the present utility model.

[0024] The meanings of the reference numerals in the drawings are as follows:

[0025] 1—tool shank; 2—holder, 21—accommodation cavity; 3—spacer; 4—power supply module; 5—signal processing module; 6—detection mechanism, 61—fixed bracket, 611—frame body, 6111—hollow part, 612—support member, 6121—installation groove, 62—detection component, 621—first displacement sensor, 622—second displacement sensor, 623—third displacement sensor, 624—fourth displacement sensor, 625—fifth displacement sensor; 7—workbench; 8—base; 9—standard ball. Detailed implementation manners

[0026] The following details the implementation manners of the present application. The examples of the implementation manners are shown in the drawings, where the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions throughout. The implementation manners described below by referring to the drawings are exemplary and are only used to explain the present application and should not be construed as a limitation to the present application.

[0027] In order to enable those skilled in the art of the present technology to better understand the solution of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of protection of the present application.

[0028] In the embodiments of the present application, "at least one" means one or more; "a plurality" means two or more. In the description of the present application, words such as "first", "second", "third", etc. are only used for the purpose of distinguishing descriptions and should not be understood as indicating or implying relative importance, nor should they be understood as indicating or implying order.

[0029] The reference to "an implementation manner" or "some implementation manners" etc. in this specification means that in one or more implementation manners of the present application, specific features, structures or characteristics described in combination with the embodiment are included. Thus, the terms "including", "comprising", "having" and their variants in this specification all mean "including but not limited to", unless otherwise specifically emphasized in other ways. It should be noted that in the embodiments of the present application, "and / or" describes the association relationship of associated objects and indicates that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone, these three situations.

[0030] It should be noted that in the embodiments of the present utility model, when a component is referred to as being "fixed to" another component, it can be directly on the other component or there may also be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component at the same time. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be an intermediate component at the same time. Also, in the embodiments of the present application, "connection" can also be understood as electrical connection, and the connection of two electrical components can be a direct or indirect connection between the two electrical components. For example, when A is connected to B, it can be a direct connection between A and B, or it can be an indirect connection between A and B through one or more other electrical components. The terms "vertical", "horizontal", "left", "right" and similar expressions used in the embodiments of the present utility model are only for illustrative purposes and are not intended to limit the present utility model.

[0031] A high-precision tool holder 1 type probe provided by an embodiment of the present utility model is shown in Figures 1 to 6 as follows. Figure 1 FIG. is a schematic structural diagram of a high-precision tool holder 1 type probe provided by an embodiment of the present utility model. Figure 2 FIG. is a schematic structural diagram of the tool holder 1 in the embodiment of the present utility model. Figure 3 FIG. is a schematic structural diagram of the spacer 3 in the embodiment of the present utility model. Figure 4 FIG. is a schematic structural diagram of the power supply module 4 and the signal processing module 5 in the embodiment of the present utility model. Figure 5 FIG. is a schematic structural diagram of the detection mechanism 6 in the embodiment of the present utility model. Figure 6 FIG. is a schematic structural diagram of the support member 612 in the embodiment of the present utility model. A high-precision tool holder 1 type probe provided by an embodiment of the present utility model includes a tool holder 1, a chuck 2, a spacer 3, a power supply module 4, a signal processing module 5 and a detection mechanism 6. The chuck 2 has a receiving cavity 21. The chuck 2 is connected to the tool holder 1. The spacer 3, the power supply module 4 and the signal processing module 5 are sequentially arranged inside the receiving cavity 21 in a direction away from the tool holder 1. The power supply module 4 is used to supply power to the signal processing module 5. The signal processing module 5 is used for wireless communication with the signal receiver in the CNC machine. The detection mechanism 6 includes a fixing frame 61 and a detection component 62. The fixing frame 61 is connected to the chuck 2. The detection component 62 is detachably connected to the fixing frame 61. The detection component 62 is respectively connected to the power supply module 4 and the signal processing module 5. The detection component 62 includes N high-precision displacement sensors, and the value range of N is from 1 to 5.

[0032] Among them, the high-precision displacement sensors in the detection mechanism 6 can be quickly replaced according to the actual requirements of the object to be measured. The number of high-precision displacement sensors ranges from 1 to 5, improving the flexibility and adaptability of detection. By integrating the power supply module 4 and the signal processing module 5 inside the accommodation cavity 21 of the gripper 2, internal wiring is achieved, reducing external connection lines, making the probe more convenient to use during operation, and at the same time reducing production costs. The signal processing module 5 can wirelessly transmit the information collected by the high-precision displacement sensors to the signal receiver inside the CNC machine, which also improves the convenience of the detection process and production efficiency. The object to be measured refers to the workpiece that needs to be measured, and the number of high-precision displacement sensors corresponds to the number of surfaces of the object to be measured that need to be measured.

[0033] In this embodiment, the gripper 2 with the accommodation cavity 21 is connected to the tool holder 1. Inside the accommodation cavity 21, a gasket 3, a power supply module 4, and a signal processing module 5 are sequentially arranged along the direction away from the tool holder 1. The power supply module 4 is used to supply power to the signal processing module 5, and the signal processing module 5 is used for wireless communication with the signal receiver inside the CNC machine. The fixed frame 61 in the detection mechanism 6 is connected to the gripper 2, and the detection component 62 is detachably connected to the fixed frame 61. The detection component 62 is respectively connected to the power supply module 4 and the signal processing module 5. The detection component 62 includes N high-precision displacement sensors, and the value range of N is 1 to 5. In this way, multiple high-precision displacement sensors are detachably assembled on the fixed frame 61, and different numbers of high-precision displacement sensors can be quickly replaced according to the actual requirements of the object to be measured. At the same time, the power supply module 4 and the signal processing module 5 are integrated inside the accommodation cavity 21 of the gripper 2. The information collected by the high-precision displacement sensors is wirelessly transmitted to the signal receiver inside the CNC machine through the signal processing module 5, reducing the limitation of external connection lines. Subsequently, production costs can be reduced, and at the same time, it is beneficial to improve the convenience of the detection process and production efficiency. Thus, the technical effect of reducing costs and being beneficial to improving production efficiency is achieved.

[0034] As an implementation manner, please refer to Figures 1 to 5 , where Figures 1 to 5It is a state diagram when N is 5. The five high-precision displacement sensors include the first displacement sensor 621, the second displacement sensor 622, the third displacement sensor 623, the fourth displacement sensor 624, and the fifth displacement sensor 625. The first displacement sensor 621, the second displacement sensor 622, the third displacement sensor 623, the fourth displacement sensor 624, and the fifth displacement sensor 625 respectively belong to high-precision displacement sensors. The detection direction of the first displacement sensor 621 is the space X+ axis direction, the detection direction of the second displacement sensor 622 is the space X- axis direction, the detection direction of the third displacement sensor 623 is the space Y+ axis direction, the detection direction of the fourth displacement sensor 624 is the space Y- axis direction, and the detection direction of the fifth displacement sensor 625 is the space Z axis direction. Since the detection direction of the first displacement sensor 621 is the space X+ axis direction, that is, the first displacement sensor 621 is installed on the fixed frame 61 along the X+ axis direction. Since the detection direction of the second displacement sensor 622 is the space X- axis direction, that is, the second displacement sensor 622 is installed on the fixed frame 61 along the X- axis direction. The detection direction of the third displacement sensor 623 is the space Y+ axis direction, that is, the third displacement sensor 623 is installed on the fixed frame 61 along the Y+ axis direction. The detection direction of the fourth displacement sensor 624 is the space Y- axis direction, that is, the fourth displacement sensor 624 is installed on the fixed frame 61 along the Y- axis direction. The detection direction of the fifth displacement sensor 625 is the space Z axis direction, that is, the fifth displacement sensor 625 is installed on the fixed frame 61 along the Z axis direction. By covering the main directions of the three-dimensional space with the first displacement sensor 621, the second displacement sensor 622, the third displacement sensor 623, the fourth displacement sensor 624, and the fifth displacement sensor 625, the precise positioning and measurement of an object in space can be achieved.

[0035] In some embodiments, in actual operation, first, the tool shank 1 of the high-precision tool shank 1 type probe is installed in the spindle of the CNC machine tool, and the spindle rotation angle is set to 0°, so as to determine the X-detection point. The spindle rotation angle of 90° is the Y-detection point, 180° is the X+ detection point, 270° is the Y+ detection point, and the lower end direction of the spindle is the Z+ detection point. Then, calibration is carried out. The standard ball 9 is used for calibration. The ball diameter size of the standard ball 9 is 10.000 MM, and the height from the bottom surface to the top surface of the calibration ball is H. The base 8 of the standard ball 9 is placed at the center of the CNC worktable 7. Through CNC spindle correction, it is ensured that the center of the ball is located at the center of the worktable 7. The center of the worktable 7 is set as X0 and Y0, and the bottom surface of the worktable 7 is set as Z0. The corresponding surfaces of the standard ball 9 are detected at the four detection points of X+, X-, Y+, and Y- respectively, and the detection values (La+, La-, Lb+, Lb-) are recorded to ensure that the error fluctuation is within + / -0.02. The Z+ surface of the standard ball 9 is detected at the Z+ detection point, and the detection value (Lc+) is recorded. Then, the detection of the object to be measured is carried out. The calibrated high-precision tool shank 1 type probe is used to detect the workpiece. The five surfaces of X+, X-, Y+, Y-, and Z+ of the workpiece are detected respectively. When detecting, the high-precision displacement sensor contacts the surface of the workpiece, and the signal is wirelessly transmitted to the signal receiver through the signal processing module 5. The actual detection value is calculated according to the detection data. For example, the actual detection value of the X+ surface is (Lx+)-L, where L is the reference value determined according to the calibration process. Then, the CNC machine tool controller receives the detection data and processes it according to the preset machining program and the detection data.

[0036] In some embodiments, when N is 4, the four high-precision displacement sensors include a first displacement sensor 621, a second displacement sensor 622, a third displacement sensor 623, and a fourth displacement sensor 624. The detection direction of the first displacement sensor 621 is the spatial X+ axis direction, the detection direction of the second displacement sensor 622 is the spatial X- axis direction, the detection direction of the third displacement sensor 623 is the spatial Y+ axis direction, and the detection direction of the fourth displacement sensor 624 is the spatial Y- axis direction or the Z axis direction. If the actual requirement of the object to be measured is to measure the object to be measured in the spatial X+ axis direction, X- axis direction, Y+ axis direction, and Y- axis direction or Z axis direction, the measurement directions can be covered by the first displacement sensor 621, the second displacement sensor 622, the third displacement sensor 623, and the fourth displacement sensor 624.

[0037] In some embodiments, when N is 3, the three high-precision displacement sensors include a first displacement sensor 621, a second displacement sensor 622, and a third displacement sensor 623. The detection direction of the first displacement sensor 621 is the positive X-axis direction in space, the detection direction of the second displacement sensor 622 is the negative X-axis direction in space, and the detection direction of the third displacement sensor 623 is the positive Y-axis direction or the negative Y-axis direction or the Z-axis direction in space. If the actual requirement of the object to be measured is to measure the object to be measured in the positive X-axis direction, the negative X-axis direction, and the positive Y-axis direction or the negative Y-axis direction or the Z-axis direction in space, the measurement directions can be covered by the first displacement sensor 621, the second displacement sensor 622, and the third displacement sensor 623.

[0038] In some embodiments, when N is 2, the two high-precision displacement sensors include a first displacement sensor 621 and a second displacement sensor 622. The detection direction of the first displacement sensor 621 is the positive X-axis direction in space, and the detection direction of the second displacement sensor 622 is the negative X-axis direction or the positive Y-axis direction or the negative Y-axis direction or the Z-axis direction in space. If the actual requirement of the object to be measured is to measure the object to be measured in the positive X-axis direction, and the negative X-axis direction or the positive Y-axis direction or the negative Y-axis direction or the Z-axis direction in space, the measurement directions can be covered by the first displacement sensor 621 and the second displacement sensor 622.

[0039] In some embodiments, when N is 1, the detection direction of the one high-precision displacement sensor is the positive X-axis direction or the negative X-axis direction or the positive Y-axis direction or the negative Y-axis direction or the Z-axis direction in space. If the actual requirement of the object to be measured is to measure the object to be measured in the positive X-axis direction or the negative X-axis direction or the positive Y-axis direction or the negative Y-axis direction or the Z-axis direction in space, the measurement can be performed by one high-precision displacement sensor.

[0040] In some embodiments, the fixing bracket 61 includes a bracket body 611 and a support member 612. The bracket body 611 has a hollow portion 6111. The bracket body 611 is connected to the gripper 2, and the hollow portion 6111 communicates with the accommodation cavity 21. The number of the support members 612 is the same as the number of the high-precision displacement sensors. The support members 612 are integrally formed with the bracket body 611. An installation groove 6121 communicating with the hollow portion 6111 is provided on the support member 612, and the high-precision displacement sensor is threadedly connected to the installation groove 6121. Through the design of the integrally formed fixing bracket 61 and the support member 612, the stability and rigidity of the structure can be enhanced, and the measurement error caused by vibration or impact can be reduced. At the same time, the threaded connection between the installation groove 6121 and the high-precision displacement sensor will ensure the stable installation of the sensor, as well as facilitate disassembly and replacement, which is beneficial to improving the flexibility and maintenance convenience of the equipment.

[0041] In some embodiments, the distances between the detection ends of the high-precision displacement sensors and the fixed frame 61 are all equal, and the detection accuracy error range of the high-precision displacement sensors is ±0.02 mm. By controlling the distances between the detection ends of the sensors and the detection accuracy error range, the measurement accuracy and reliability can be improved.

[0042] In some embodiments, a high-precision tool shank 1 type probe provided by an embodiment of the present invention further includes a workbench 7 and a base 8. The base 8 is placed on the workbench 7. The base 8 is used to place the object to be measured, and the base 8 is located at the center of the workbench 7. The workbench 7 and the base 8 provide a stable measurement environment for the high-precision tool shank 1 type probe, which is beneficial to improving the measurement accuracy and reliability.

[0043] In some embodiments, the tool shank 1 is connected to the spindle of the CNC machine tool. A high-precision tool shank 1 type probe provided by an embodiment of the present invention further includes a numerical control machine tool controller. Those skilled in the art can understand that in a high-precision tool shank 1 type probe provided by an embodiment of the present invention, the specific structures of the numerical control machine tool controller and the signal receiver in the CNC machine are not limited. It only needs to implement infrared or Bluetooth communication between the signal receiver in the CNC machine and the signal processing module 5, and the numerical control machine tool controller is connected to the signal receiver in the CNC machine. By using the wireless data transmission method, the complexity of the external connection lines and the maintenance cost are reduced, which is beneficial to improving the flexibility and convenience of the system, and at the same time enhancing the automation degree and accuracy of the measurement process.

[0044] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit. Although the present invention has been described in detail with reference to the examples, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A high-precision toolholder-type probe, characterized in that, The high-precision tool shank type probe includes: a tool shank, a holder having a receiving cavity, a detection mechanism, and a gasket, a power supply module, and a signal processing module sequentially arranged in the receiving cavity in a direction away from the tool shank. The holder is connected to the tool shank; the power supply module is used to supply power to the signal processing module, and the signal processing module is used for wireless communication with a signal receiver in a CNC machine; the detection mechanism includes a fixing frame and a detection component detachably connected to the fixing frame, and the fixing frame is connected to the holder; the detection component is respectively connected to the power supply module and the signal processing module, and the detection component includes N high-precision displacement sensors, and the value range of N is 1 to 5.

2. The high-precision tool shank type probe according to claim 1, characterized in that: When N is 5, the five high-precision displacement sensors include a first displacement sensor, a second displacement sensor, a third displacement sensor, a fourth displacement sensor, and a fifth displacement sensor. The detection direction of the first displacement sensor is the spatial X+ axis direction, the detection direction of the second displacement sensor is the spatial X- axis direction, the detection direction of the third displacement sensor is the spatial Y+ axis direction, the detection direction of the fourth displacement sensor is the spatial Y- axis direction, and the detection direction of the fifth displacement sensor is the spatial Z axis direction.

3. The high-precision toolholder type probe according to claim 1, wherein: When N is 4, the four high-precision displacement sensors include a first displacement sensor, a second displacement sensor, a third displacement sensor, and a fourth displacement sensor. The detection direction of the first displacement sensor is the spatial X+ axis direction, the detection direction of the second displacement sensor is the spatial X- axis direction, the detection direction of the third displacement sensor is the spatial Y+ axis direction, and the detection direction of the fourth displacement sensor is the spatial Y- axis direction or the Z axis direction.

4. The high-precision toolholder type probe according to claim 1, wherein: When N is 3, the three high-precision displacement sensors include a first displacement sensor, a second displacement sensor, and a third displacement sensor. The detection direction of the first displacement sensor is the spatial X+ axis direction, the detection direction of the second displacement sensor is the spatial X- axis direction, and the detection direction of the third displacement sensor is the spatial Y+ axis direction or the Y- axis direction or the Z axis direction.

5. The high-precision toolholder-type probe according to claim 1, characterized in that: When N is 2, the two high-precision displacement sensors include a first displacement sensor and a second displacement sensor. The detection direction of the first displacement sensor is the spatial X+ axis direction, and the detection direction of the second displacement sensor is the spatial X- axis direction or the Y+ axis direction or the Y- axis direction or the Z axis direction.

6. The high-precision toolholder-type probe according to claim 1, characterized in that: When N is 1, the detection direction of the one high-precision displacement sensor is the spatial X+ axis direction or the X- axis direction or the Y+ axis direction or the Y- axis direction or the Z axis direction.

7. The high-precision tool shank type probe according to claim 1, characterized in that The fixing frame includes: a frame body having a hollow portion and support members having the same number as the high-precision displacement sensors. The frame body is connected to the holder, and the hollow portion is communicated with the receiving cavity; the support members are integrally formed with the frame body, and an installation groove communicated with the hollow portion is arranged on the support members, and the high-precision displacement sensors are threadedly connected to the installation groove.

8. The high-precision toolholder type probe according to claim 1, wherein: The distances between the detection ends of the high-precision displacement sensors and the fixed frame are all equal; the detection accuracy error range of the high-precision displacement sensors is ±0.02 mm.

9. The high-precision toolholder-type probe according to claim 1, characterized in that, The high-precision toolholder probe further includes: a workbench and a base placed on the workbench, the base is used for placing the object to be measured, and the base is located at the center of the workbench.

10. The high-precision toolholder-type probe according to claim 1, wherein: The toolholder is connected to the spindle of the CNC machine tool; the signal receiver in the CNC machine communicates with the signal processing module by infrared or Bluetooth; the high-precision toolholder probe further includes a numerical control machine tool controller, and the numerical control machine tool controller is connected to the signal receiver in the CNC machine.

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