Fine boring cutter structure with cutter diameter and cutter length detection function

Abstract

The invention discloses a fine boring cutter structure with a cutter diameter and cutter length detection function, and relates to the technical field of fine boring cutters, the fine boring cutter structure comprises a cutter and a cutter body used for assembling the cutter, the fine boring cutter structure comprises an inner cavity formed in the cutter body, a positioning assembly is arranged in the inner cavity, and the positioning assembly comprises rotating parts which are oppositely and rotatably arranged; and a cutter length detection unit and a cutter diameter detection unit are arranged on the positioning plate. According to the fine boring cutter structure with the cutter diameter and cutter length detection function, the clamp is driven to formally clamp the cutter in the mode that the detection support is pushed in an abutting mode, the problem that two hands are needed for limiting and fastening is solved, and the assembly difficulty is lowered. And through the arrangement of the positioning plate and the cutter length and cutter diameter detection unit, one-time detection is carried out when the cutters are assembled each time, and the cutters with large abrasion are screened out in time. When the tool needs to be detected in an assembled state, the detection support is pulled out reversely, and the tool can be detected through the positioning plate which deflects towards the tool.

Description

Technical Field

[0001] The present invention relates to the technical field of fine boring tools, and more particularly to a fine boring tool structure with tool diameter and tool length detection functions. Background Art

[0002] A fine boring tool is an important tool for precision hole machining in mechanical processing, and its machining accuracy directly affects the quality of workpieces. During the fine boring process, tool wear will cause changes in tool diameter and tool length, which in turn affect machining accuracy. Traditional fine boring tools usually do not have the functions of detecting tool diameter and tool length, and operators need to regularly disassemble the tools and use special measuring tools for measurement.

[0003] Combined with the publication number CN117506554A, a method and device for detecting the radial dimension of a boring tool exceeding the limit are disclosed. Before boring, the part is installed on the machine tool workbench, the boring tool is installed on the machine tool spindle, and the signal lamp, power supply, machine tool spindle and machine tool workbench are connected in series into a circuit; the detection surface of the boring tool diameter detection device is accurately adjusted to the maximum inner hole diameter size of the part by using the rapid positioning element; after removing the rapid positioning element, first reverse the machine tool spindle. If the signal lamp does not light up after the boring tool passes through the detection surface of the boring tool diameter detection device, then restore the machine tool spindle to forward rotation and the normal cutting speed to start boring. After one machining is completed, increase the boring tool diameter size to perform boring on the inner hole wall allowance of the part, and repeat the reverse detection process every time the boring tool diameter size is adjusted.

[0004] However, in the above patent, the fine boring tool needs to be measured separately, which means that in the actual production process, the fine boring tool needs to be detected before assembling the tool, and then assembled. This process is prone to be forgotten by the users, resulting in the assembly of unmeasured tools. Summary of the Invention

[0005] The purpose of the present invention is to provide a fine boring tool structure with tool diameter and tool length detection functions to solve the above problems.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A fine boring tool structure with tool diameter and tool length detection functions, including a tool and a tool body for assembling the tool, including a cavity opened in the tool body, in which a positioning component is arranged. The positioning component includes a rotating member that is relatively and rotatably arranged, and one end of it is deflected by the tool to clamp the tool at the other end; A detection bracket slidably arranged on the tool body, on which a positioning plate is rotatably arranged, and the positioning plate has an inclined state to guide the tool into the cavity; A tool length detection unit and a tool diameter detection unit are arranged on the positioning plate; A receiving groove for accommodating the positioning plate in a horizontal state is opened at the end of the cavity; A fixture slidably arranged in the inner cavity along the width direction of the tool, which approaches each other as the detection bracket moves; A signal processing unit, which is used to convert the signals of the tool length detection unit and the tool diameter detection unit into tool diameter and tool length information; An external display unit, which is used to display the tool diameter and tool length information.

[0007] Preferably, both the tool length detection unit and the tool diameter detection unit adopt pressure sensors.

[0008] Preferably, a swivel base is rotatably arranged at the end of the detection bracket, and a positioning plate is rotatably arranged on the swivel base; A first flexible member is arranged on the swivel base to keep the positioning plate at a predetermined angle, and the tool length detection unit is used to detect the force on the first flexible member.

[0009] Preferably, positioning wheels are symmetrically arranged on the positioning plate, and a second flexible member for making the positioning wheels approach each other is arranged on the positioning wheels; The tool diameter detection unit is used to detect the force on the second flexible member.

[0010] Preferably, the positioning assembly further includes a movable frame slidably arranged in the inner cavity along the width direction and slidably matched with the detection bracket, and an elastic flap is fixedly arranged on the movable frame.

[0011] Preferably, the elastic flap has a concave state for driving the rotating member.

[0012] Preferably, a heat conducting sheet is fixedly arranged on the fixture, and a clamping groove for restricting the end of the heat conducting sheet is formed on the elastic flap.

[0013] Preferably, a plurality of heat transfer fins are arranged on the heat conducting sheet.

[0014] Preferably, it further includes a liquid outlet opened on the tool body and facing the tool and a control cavity opened on the liquid outlet, and a piston that moves due to temperature change is arranged in the control cavity.

[0015] Preferably, an adjustment knob for driving the detection bracket is rotatably arranged on the tool body.

[0016] In the above technical solution, a fine boring tool structure with a tool diameter and tool length detection function provided by the present invention has the following beneficial effects: By pushing against the detection bracket, the fixture is driven to officially clamp the tool, avoiding the problem of needing to limit and fasten with two hands respectively, and reducing the assembly difficulty. And through the setting of the positioning plate and the tool length and tool diameter detection unit, a detection is carried out each time the tool is assembled, and the tools with larger wear are screened out in time. When it is necessary to detect the tool in the assembled state, the detection bracket is pulled out in the reverse direction, and the detection of the tool can be realized through the positioning plate deflected towards the tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is the overall three-dimensional schematic diagram provided by the embodiment of the present invention; Figure 2 It is the schematic cross-sectional structure diagram of the tool body provided by the embodiment of the present invention; Figure 3 It is the schematic diagram of the detection bracket and fixture structure provided by the embodiment of the present invention; Figure 4 It is the schematic diagram of the detection bracket and positioning plate structure provided by the embodiment of the present invention; Figure 5 It is the schematic diagram of the clamping assembly structure provided by the embodiment of the present invention; Figure 6 It is the schematic diagram of the internal control cavity structure of the tool body provided by the embodiment of the present invention; Figure 7 It is the schematic diagram of the control cavity and sealing cavity structure provided by the embodiment of the present invention; Figure 8 It is the schematic diagram of the detection process provided by the embodiment of the present invention; Figure 9 It is the schematic diagram of the initial state of the detection bracket and the positioning plate provided by the embodiment of the present invention; Figure 10 It is the schematic diagram of the active state of the detection bracket and the positioning plate provided by the embodiment of the present invention.

[0019] Description of the reference numerals: 1. Tool body; 11. Side groove; 12. Inner cavity; 13. Liquid outlet; 14. First spring; 2. Detection bracket; 21. Rack; 22. Rotating base; 23. Transmission block; 24. Rotating shaft; 25. Cam; 26. Transmission rod; 3. Positioning plate; 31. Positioning wheel; 32. First flexible member; 33. Second flexible member; 4. Adjusting knob; 41. Gear; 5. Fixed bolt; 6. Tool; 7. Positioning assembly; 71. Movable frame; 72. Elastic flap; 721. Card slot; 73. Blocking block; 74. Elastic member; 75. Rotating member; 76. Pressing rod; 77. Slide rail; 8. Clamp; 81. Heat conducting sheet; 82. Heat transfer fin; 83. Slide block; 9. Connecting pipe; 91. Liquid inlet cavity; 92. Control cavity; 93. Piston; 94. Sealing cavity; 95. Second spring; 100. Signal processing unit; 101. Wireless transmission module; 102. External display unit. Detailed implementation manner

[0020] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0021] As Figure 1-10 shown, a fine boring tool structure with tool diameter and tool length detection functions includes a tool 6 and a tool body 1 for assembling the tool 6, including an inner cavity 12 opened in the tool body 1, in which a positioning assembly 7 is provided. The positioning assembly 7 includes a rotatable member 75 (as Figure 5 shown), one end of which is deflected by the tool 6 to clamp the tool 6 at the other end; A detection bracket 2 slidably arranged on the tool body 1, on which a positioning plate 3 is rotatably arranged. The positioning plate 3 has an inclined state to guide the tool 6 into the inner cavity 12 (as Figure 2 shown); A tool length detection unit and a tool diameter detection unit are provided on the positioning plate 3; A storage groove for accommodating the positioning plate 3 in a horizontal state is opened at the end of the inner cavity 12; Symmetrically and slidably arranged clamps 8 in the inner cavity 12, which approach each other along the width direction of the inner cavity 12 as the detection bracket 2 moves (as Figure 3 shown); A signal processing unit 100, which is used to convert the signals of the tool length detection unit and the tool diameter detection unit into tool diameter and tool length information; An external display unit 102, which is used to display the tool diameter and tool length information.

[0022] Specifically, the rotating member 75 is divided into a first end and a second end according to the rotating shaft. An elastic member 74 for maintaining a predetermined angle is provided on the rotating member 75, and a pressing rod 76 is provided at the first end of the rotating member 75 (as Figure 5As shown, during the assembly process of the cutting tool 6, it moves upward and enters the inner cavity 12. Since the positioning plate 3 is in an inclined state by default (as Figure 1 shown), the cutting tool 6 slides along the end face of the positioning plate 3. During the sliding process, the outer wall of the cutting tool 6 presses against the pressing rods 76 on both sides, causing the pressing rods 76 to deflect from the center to both sides. The second end of the rotating member 75 is then passively deflected centripetally and finally located below the cutting tool 6 for clamping. Moreover, the extrusion of the cutting tool 6 causes the elastic member 74 to be in a contracted state. At this time, the elastic force of the elastic member 74 on the rotating member 75 points from both sides to the cutting tool 6, thereby initially clamping the cutting tool 6, and only one hand is required for the initial clamping to squeeze the cutting tool 6 into the inner cavity 12.

[0023] Subsequently, the detection support 2 is pushed. A transmission block 23 is fixedly arranged at the end of the detection support 2 located inside the tool body 1, and a slider 83 that slidably cooperates with the transmission block 23 is fixedly arranged on the fixture 8 (as Figure 3 shown). During the sliding process of the detection support 2 into the tool body 1, the transmission block 23 squeezes the slider 83, causing the two fixtures 8 to approach each other and clamp the cutting tool 6. Subsequently, through the side grooves 11 opened on both sides of the tool body 1 (as Figure 1 shown), the fixing bolt 5 is aligned with the through hole opened on the transmission block 23 and the fixing bolt 5 is screwed in to limit the positions of the detection support 2 and the fixture 8, completing the clamping and fixing of the cutting tool 6.

[0024] Furthermore, during the initial clamping process, since the cutting tool 6 slides along the positioning plate 3, the tool length detection unit and the tool diameter detection unit can use a laser sensor to emit laser light to the surface of the cutting tool 6 and receive it through reflection, so as to obtain the contour image data of the surface of the cutting tool 6, or the tool length detection unit and the tool diameter detection unit can use an image detection unit to record the image of the surface of the cutting tool 6 through continuous image shooting, so as to use this as a basis for judging the tool length, tool diameter and wear condition, or other sensors well-known to those skilled in the art can also be used; and the corresponding tool length and tool diameter information is generated by the signal processing unit 100, and further includes a wireless transmission module 101 to transmit the tool length and tool diameter information to the external display unit 102. The external display unit 102 includes a display screen, and the operator can obtain the data of the cutting tool 6 according to the relevant information displayed on the display screen, so as to timely obtain the usage condition of the current cutting tool 6 each time the cutting tool 6 is disassembled and assembled, and timely replace the cutting tool 6 with a larger wear degree.

[0025] After the tool 6 is assembled, the positioning plate 3 is manually rotated to a horizontal state, and then the detection bracket 2 and the positioning plate 3 are pushed into the inner cavity 12, so that the positioning plate 3 enters the storage slot to avoid interfering with the normal use of the tool 6. When the tool 6 needs to be inspected in the assembled state, it is only necessary to release the fixing bolt 5 and then pull out the detection bracket 2 in the reverse direction, so that the tool 6 can be inspected by the positioning plate 3 deflected toward the tool 6, and in this process, the initial clamping of the positioning assembly 7 can prevent the tool 6 from falling off during the inspection process.

[0026] In the above technology, the clamp 8 is driven to formally clamp the tool 6 by pushing the detection bracket 2, avoiding the problem of needing two hands to limit and tighten respectively, and reducing the difficulty of assembly. And through the setting of the positioning plate 3 and the tool length detection unit and the tool diameter detection unit, a detection is performed every time the tool 6 is assembled, and the tool 6 with greater wear is screened out in time. When it is necessary to detect the tool 6 in the assembled state, the detection bracket 2 is pulled out in the reverse direction, and the tool 6 can be detected by the positioning plate 3 deflected toward the tool 6.

[0027] As an embodiment further provided by the present invention, a rotating seat 22 is rotatably provided at the end of the detection bracket 2, and the positioning plate 3 is rotatably provided on the rotating seat 22; A first flexible member 32 is disposed on the rotating seat 22 to keep the positioning plate 3 at a predetermined angle, and the knife length detection unit is used to detect the force applied to the first flexible member 32 .

[0028] Specifically, a rotating shaft 24 is fixedly provided on the positioning plate 3, the rotating shaft 24 is passed through the rotating seat 22 and is rotatably connected to the rotating seat 22, and the detection bracket 2 is slidably provided at both ends of the rotating shaft 24 (such as Figure 4 The detection bracket 2 is also provided with a cam 25, which is connected to the rotating seat 22 by a transmission rod 26, so as to fix the angle of the rotating seat 22 and prevent relative rotation during the detection process (such as Figure 4 As shown in FIG. 1 ), by setting a first flexible member 32 between the rotating seat 22 and the positioning plate 3, the angle between the positioning plate 3 and the rotating seat 22 is fixed by the elastic potential energy of the first flexible member 32 (as shown in FIG. 1 ). Figure 3 As shown, the angle of the positioning plate 3 is fixed. During the assembly of the tool 6, the tip of the tool 6 slides along the positioning plate 3, and the tool 6 is guided to a predetermined position. At the same time, the tip of the tool 6 applies a force to the positioning plate 3 to make the angle of the positioning plate 3 consistent with the inclination of the tip of the tool. The positioning plate 3 deflects counterclockwise (as shown in FIG. Figure 3 As shown), and in this process the first flexible member 32 is stretched and stored (as shown Figure 3As shown in the figure, the tool length detection unit uses a pressure sensor, which is assembled on the first flexible member 32 to detect the pulling force on the positioning plate 3. When the length of the tool 6 is shortened due to wear, the deflection angle of the positioning plate 3 decreases, the force on the first flexible member 32 weakens and transmits a signal through the pressure sensor. When the length of the tool 6 is lower than the preset range, the external display unit 102 triggers an alarm to prompt replacement.

[0029] As yet another embodiment further provided by the present invention, positioning wheels 31 are symmetrically arranged on the positioning plate 3, and a second flexible member 33 for bringing the positioning wheels 31 closer to each other is arranged on the positioning wheels 31; The tool diameter detection unit is used to detect the force on the second flexible member 33.

[0030] Specifically, when the tool 6 is guided into the predetermined position, the tool tip is squeezed between the two positioning wheels 31, and the two positioning wheels 31 are pushed apart to both sides by the tool tip. The second flexible member 33 is located between the two positioning wheels 31 (as shown in the figure), at this time the second flexible member 33 extends, the tool diameter detection unit uses a pressure sensor, and the pressure sensor is assembled on the second flexible member 33 and detects the force condition. Since the positioning plate 3 will be deflected adaptively under the push of the tool tip, the positioning wheels 31 are always kept close to both sides of the tool tip of the tool 6, reducing the operation of manual debugging. Figure 4 As shown in the figure), at this time the second flexible member 33 extends, the tool diameter detection unit uses a pressure sensor, and the pressure sensor is assembled on the second flexible member 33 and detects the force condition. Since the positioning plate 3 will be deflected adaptively under the push of the tool tip, the positioning wheels 31 are always kept close to both sides of the tool tip of the tool 6, reducing the operation of manual debugging.

[0031] As yet another embodiment further provided by the present invention, the positioning assembly 7 further includes a movable frame 71 that is slidably arranged in the inner cavity 12 along the width direction and is slidably matched with the detection bracket 2, and an elastic flap 72 is fixedly arranged on the movable frame 71.

[0032] Specifically, the movable frame 71 slides along the width direction of the inner cavity 12, and a slide rail 77 is arranged on the movable frame 71 for the detection bracket 2 to slide along the length direction (as shown in the figure). At the same time, the slide rail 77 forms a locking relationship with the cam 25 (as shown in the figure). The cam 25 is in transmission cooperation with the swivel base 22 through a transmission rod 26. A groove for accommodating the end of the cam 25 is opened on the slide rail 77. When the detection bracket 2 is not pushed, the side wall of the end of the cam 25 closely adheres to the inner wall of the groove, as shown in the figure. When there is no external force, the positioning plate 3 drives the swivel base 22 to have a tendency to deflect counterclockwise downward, so that the cam 25 has a deflecting force. At this time, the supporting force provided by the side surface of the groove to the cam 25 cancels out this deflecting force, that is, under the block of the slide rail 77, the angles of the cam 25 and the swivel base 22 are kept fixed and will not rotate relative to the detection bracket 2. During the process of pushing the detection bracket 2, the detection bracket 2 slides towards the direction of the movable frame 71, and the cam 25 will abut against the inner wall of the groove, causing the cam 25 to deflect clockwise (taking... as an example) Figure 3 As shown in the figure), and at the same time, the slide rail 77 forms a locking relationship with the cam 25 (as shown in the figure). The cam 25 is in transmission cooperation with the swivel base 22 through a transmission rod 26. A groove for accommodating the end of the cam 25 is opened on the slide rail 77. When the detection bracket 2 is not pushed, the side wall of the end of the cam 25 closely adheres to the inner wall of the groove, as shown in the figure. Figure 4 As shown in the figure), a groove for accommodating the end of the cam 25 is opened on the slide rail 77. When the detection bracket 2 is not pushed, the side wall of the end of the cam 25 closely adheres to the inner wall of the groove, as shown in the figure. When there is no external force, the positioning plate 3 drives the swivel base 22 to have a tendency to deflect counterclockwise downward, so that the cam 25 has a deflecting force. At this time, the supporting force provided by the side surface of the groove to the cam 25 cancels out this deflecting force, that is, under the block of the slide rail 77, the angles of the cam 25 and the swivel base 22 are kept fixed and will not rotate relative to the detection bracket 2. Figure 9 As shown in the figure), when there is no external force, the positioning plate 3 drives the swivel base 22 to have a tendency to deflect counterclockwise downward, so that the cam 25 has a deflecting force. At this time, the supporting force provided by the side surface of the groove to the cam 25 cancels out this deflecting force, that is, under the block of the slide rail 77, the angles of the cam 25 and the swivel base 22 are kept fixed and will not rotate relative to the detection bracket 2. During the process of pushing the detection bracket 2, the detection bracket 2 slides towards the direction of the movable frame 71, and the cam 25 will abut against the inner wall of the groove, causing the cam 25 to deflect clockwise (taking... as an example) Figure 10The position shown is used as a reference) until the end of the cam 25 is offset from the groove and the end surface of the cam 25 slides along the upper surface of the slide rail 77 (as shown in FIG. Figure 10 As shown in the figure, the transmission rod 26 is driven by the rotation of the cam 25, so that the rotating seat 22 swings clockwise, and the positioning plate 3 is driven to deflect to a parallel state under the pulling of the first flexible member 32, so that the state of the positioning plate 3 is switched while the detection bracket 2 is pushed.

[0033] As another embodiment further provided by the present invention, the elastic paddle 72 has a concave state for driving the rotating member 75 .

[0034] Specifically, the two elastic paddles 72 are in an expanded state by default and are symmetrically arranged in an eight-shaped shape. Figure 5 As shown, the first end of the elastic paddle 72 is fixedly arranged on the movable frame 71, and the second end is in a nest shape. A blocking block 73 is fixedly arranged on the movable frame 71. The elastic paddle 72 is kept in a default state by overlapping the blocking block 73 through the nest-shaped structure, and the pressing rod 76 of the rotating member 75 is against the side of the elastic paddle 72, so that the second end position of the elastic paddle 72 is fixed.

[0035] When the tool 6 is assembled upward, the two elastic paddles 72 in the bulging state have a guiding and centering function for the tool 6 to prevent the tool 6 from axially deviating during the assembly process. The tool 6 will first squeeze the two elastic paddles 72 apart, so that the movable frame 71 slides in the inner cavity 12 along the width direction, and the two movable frames 71 move away from each other (such as Figure 2 As shown), and a first spring 14 is arranged between the detection brackets 2, at this time, the two movable frames 71 drive the two detection brackets 2 to move away from each other, and at this time, the detection bracket 2 slides along the end of the rotating shaft 24 so that the positioning plate 3 is still maintained in the center of the rotating shaft 24, and at the same time, the first spring 14 is stretched and force is stored.

[0036] At the same time, the two elastic paddles 72 are deformed to the shape as shown in the figure below under the push of the outer wall of the cutter 6. Figure 5 In the dotted state shown, the elastic paddle 72 will no longer block the tool 6, so that the obstruction between the two movable frames 71 disappears, and the elastic potential energy of the first spring 14 is released. The two detection brackets 2 drive the two movable frames 71 to approach each other again. The change in the state of the elastic paddle 72 drives the pressure rod 76 to deflect to both sides, and the elastic member 74 is squeezed, and the second end of the rotating member 75 is passively deflected centripetally and clamps the lower side of the tool 6 for preliminary clamping. When the clamping needs to be released, only the tool 6 needs to be moved downward, and the tool 6 presses the two rotating members 75, so that the pressure rod 76 deflects and drives the elastic paddle 72 to recover.

[0037] Moreover, at this time, the elastic flap 72 is completely attached to the outer wall of the cutting tool 6, drives the movable frame 71 to adapt to the diameter and length of the cutting tool 6, and drives the distance between the two detection brackets 2 to be adjusted through the movable frame 71 (as Figure 2 shown). The distance between the detection brackets 2 corresponding to the cutting tool 6 with a larger outer diameter increases. At this time, a gap appears between the transmission block 23 and the slider 83. When pushing the detection bracket 2 in the length direction, during the moving stroke of the transmission block 23, it first approaches the slider 83 until the gap is eliminated, and then presses the slider 83, that is, the actual pressing stroke of the slider 83 is shortened, so that the approaching stroke of the two clamps 8 is shortened, thereby avoiding excessive extrusion of the cutting tool 6 with a larger outer diameter, and being used to adapt to the cutting tool 6 whose outer diameter fluctuates during the production process, improving the fault tolerance of the device.

[0038] As another embodiment further provided by the present invention, a heat conducting sheet 81 is fixedly arranged on the clamp 8, and a clamping groove 721 for restricting the end of the heat conducting sheet 81 is formed on the elastic flap 72.

[0039] Specifically, as Figure 5 shown, when the elastic flap 72 is in the concave state, the clamping groove 721 will automatically open to form an introduction space with a larger outer part and a smaller inner part. During the approaching process of the two clamps 8, the heat conducting sheet 81 is driven to approach the cutting tool 6, and the end of the heat conducting sheet 81 enters the clamping groove 721 along the introduction space, so that the heat conducting sheet 81 can abut against the cutting tool 6 for heat transfer, reducing the high heat generated by the cutting tool 6 during boring. Since the elastic flap 72 clamps the cutting tool 6 relatively "gently", it can relieve the vibration transmitted during rigid connection, avoid the problem of collision between the high-frequency vibration generated during the boring of the cutting tool 6 and the heat conducting sheet 81, and extend the service life of the heat conducting sheet 81.

[0040] As another embodiment further provided by the present invention, it further includes a liquid outlet 13 opened on the tool body 1 and facing the cutting tool 6 and a control cavity 92 opened on the liquid outlet 13, and a piston 93 that moves under the influence of temperature change is arranged in the control cavity 92.

[0041] Specifically, a liquid inlet cavity 91 is arranged at the axis of the tool body 1, and a connecting pipe 9 is arranged on the liquid inlet cavity 91. The piston 93 divides the control cavity 92 into a sealed cavity 94 and a liquid cavity. The liquid cavity has a funnel-shaped structure, and the connecting pipe 9 and the liquid outlet 13 are respectively opened at both ends of the liquid cavity (as Figure 6 shown). A plurality of heat transfer fins 82 are slidably arranged on the heat conducting sheet (81). The ends of the heat transfer fins 82 are fixedly arranged in the sealed cavity 94, and the sealed cavity 94 is filled with air. As the temperature change is transmitted by the heat transfer fins 82, the air expands, pushing the piston 93 to slide. A second spring 95 is arranged on the piston 93 to enable the piston 93 to return to the initial state without external force.

[0042] The structure of the piston 93 and the control cavity 92 is asFigure 6 and Figure 7 As shown in Figure 7 , the piston 93 has a conical structure with a larger upper part and a smaller lower part. In the initial state, the wider part of the piston 93 abuts against the ports of the connecting pipe 9 and the liquid outlet 13 (as shown in the left figure of Figure 7 ). Subsequently, after the volume of the sealing cavity 94 expands, the piston 93 moves upward and the narrower part moves to the ports of the connecting pipe 9 and the liquid outlet 13, so that the liquid inlet space expands (as shown in the right figure of Figure 7 ), and the liquid inlet volume increases. That is, when the heat transfer fins 81 and the heat transfer wings 82 transfer more heat, the volume of the sealing cavity 94 increases, the liquid inlet volume increases, and the cooling effect on the tool 6 changes with the temperature. And because the liquid outlet 13 is inclined and pointed at the tool 6, when the tool 6 performs boring operations, it will rotate at a high speed. At this time, the coolant will gush out of the liquid outlet 13 under the centrifugal force and wash the tip of the tool 6.

[0043] As another embodiment further provided by the present invention, an adjusting knob 4 for driving the detection bracket 2 is rotatably provided on the tool body 1.

[0044] Specifically, a gear 41 is fixedly provided on the adjusting knob 4. By rotating the adjusting knob 4, the gear 41 is driven to rotate, and a rack 21 meshing with the gear 41 is fixedly provided on the detection bracket 2. Since the tool 6 extends a certain distance from the tool body 1, when a detection device is assembled on the tool body 1, the extension amount of the detection device and the tool body 1 will cause uneven gravity of the entire tool body 1. When the tool body 1 rotates at a high speed, the centrifugal force will amplify the above problem and cause the tool 6 to vibrate, affecting the machining accuracy. By adopting the structure of the detection bracket 2 and the adjusting knob 4, by retracting the detection bracket 2 into the tool body 1 along the length direction and controlling the position of the detection bracket 2 at the axis and close to the opposite direction of the extension direction of the tool 6, the weight of the detection bracket 2 can be used to balance the weight of the part extended by the tool 6, playing a role of self-balancing.

[0045] Furthermore, when the tool diameter of the tool 6 is too large, the extension distance of the detection bracket 2 in the length direction will be limited by the linkage relationship between the fixture 8 and the detection bracket 2. In the present invention, the distance between the two detection brackets 2 is adjusted by the movable frame 71 (as shown in Figure 2 ). The distance between the detection brackets 2 corresponding to the tool 6 with a larger outer diameter increases. When pushing the detection bracket 2 along the length direction, in the moving stroke of the transmission block 23, it first approaches the slider 83 and then presses the slider 83. The part of the stroke lost by the detection bracket 2 due to the increase in the outer diameter of the tool 6 is compensated by the stroke of approaching the slider 83, reducing the influence of the tool diameter change on the distance between the detection brackets 2.

[0046] Working principle: When assembling the tool 6 upwards, the two elastic paddles 72 in the bulged state play a role in guiding and centering the tool 6, preventing axial offset of the tool 6 during the assembly process. The tool 6 will first push open the two elastic paddles 72, causing the movable frame 71 to slide in the width direction within the inner cavity 12, and the two movable frames 71 move away from each other (as Figure 2 shown). At this time, the detection bracket 2 slides along the end of the rotating shaft 24 so that the positioning plate 3 still remains in the center of the rotating shaft 24. A first spring 14 is arranged between the detection brackets 2. At this time, the two movable frames 71 drive the two detection brackets 2 to move away from each other, and the first spring 14 is stretched and stores energy.

[0047] Meanwhile, under the pushing of the outer wall of the tool 6, the two elastic paddles 72 are deformed to the dotted line state as shown in Figure 5 shown. At this time, the elastic paddles 72 no longer block the tool 6, so that the obstruction between the two movable frames 71 disappears, and the elastic potential energy of the first spring 14 is released. The two detection brackets 2 drive the two movable frames 71 to move closer to each other again. By changing the state of the elastic paddles 72, the pressing rod 76 is driven to deflect to both sides, and the elastic member 74 is squeezed. The second end of the rotating member 75 is then driven to deflect centripetally and clamp the lower side of the tool 6 for preliminary clamping.

[0048] During the process of assembling the tool 6, the tip of the tool 6 slides along the positioning plate 3, and the tool 6 will be guided to the predetermined position. At the same time, the tip of the tool 6 exerts a force on the positioning plate 3 to make the angle of the positioning plate 3 consistent with the inclination degree of the tip. The positioning plate 3 deflects counterclockwise, and during this process, the first flexible member 32 extends (as Figure 3 shown). The tool length detection unit uses a pressure sensor, and the pressure sensor is assembled on the first flexible member 32 to detect the tension of the positioning plate 3. When the length of the tool 6 is shortened due to wear, the deflection angle of the positioning plate 3 decreases, the force on the first flexible member 32 weakens and transmits a signal through the pressure sensor. When the length of the tool 6 is lower than the preset range, the external display unit 102 triggers an alarm to prompt replacement.

[0049] When the tool 6 is guided into the predetermined position, the tip is squeezed into the space between the two positioning wheels 31. Through the tip, the two positioning wheels 31 are pushed apart to both sides. The second flexible member 33 is located between the two positioning wheels 31 (as Figure 4 shown). At this time, the second flexible member 33 extends. The tool diameter detection unit uses a pressure sensor, and the pressure sensor is assembled on the second flexible member 33 and detects the force condition.

[0050] And the corresponding tool length and tool diameter information is generated by the signal processing unit 100. It further includes a wireless transmission module 101 for transmitting the tool length and tool diameter information to an external display unit 102. The external display unit 102 includes a display screen. The operator can obtain the data of the tool 6 according to the relevant information displayed on the display screen, so as to timely obtain the usage status of the current tool 6 each time the tool 6 is disassembled and assembled, and timely replace the tool 6 with a larger wear degree.

[0051] Subsequently, the detection bracket 2 is pushed. A transmission block 23 is fixedly arranged at the end of the detection bracket 2 located inside the tool body 1, and a slider 83 slidably matched with the transmission block 23 is fixedly arranged on the fixture 8 (as Figure 3 shown). During the process of the detection bracket 2 sliding into the tool body 1, the transmission block 23 squeezes the slider 83, so that the two fixtures 8 approach each other and clamp the tool 6. Subsequently, through the side grooves 11 opened on both sides of the tool body 1 (as Figure 1 shown), the fixing bolt 5 is aligned with the through hole opened on the transmission block 23 and the fixing bolt 5 is screwed in to limit the positions of the detection bracket 2 and the fixture 8, thus completing the clamping and fixing of the tool 6.

[0052] Only some exemplary embodiments of the present invention are described by way of illustration. Undoubtedly, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present invention.

Claims

1. A fine boring tool structure with a tool diameter and tool length detection function, comprising a tool (6) and a tool body (1) for assembling the tool (6), characterized in that, It includes a cavity (12) opened in the tool body (1), in which a positioning component (7) is arranged. The positioning component (7) includes a rotating member (75) that is relatively and rotatably arranged, and one end of it is pressed and deflected by the tool (6) so that the other end clamps the tool (6); A detection bracket (2) slidably arranged on the tool body (1), on which a positioning plate (3) is rotatably arranged. The positioning plate (3) has an inclined state to guide the tool (6) into the cavity (12); A tool length detection unit and a tool diameter detection unit are arranged on the positioning plate (3); A storage groove for accommodating the positioning plate (3) in a horizontal state is opened at the end of the cavity (12); A clamp (8) slidably arranged in the cavity (12) along the width direction of the tool (6) approaches each other as the detection bracket (2) moves; A signal processing unit (100) is used to convert the signals of the tool length detection unit and the tool diameter detection unit into tool diameter and tool length information; An external display unit (102) is used to display the tool diameter and tool length information.

2. The structure of a fine boring tool with a tool diameter and tool length detection function according to claim 1, characterized in that, Both the tool length detection unit and the tool diameter detection unit adopt pressure sensors.

3. The structure of a fine boring tool with a tool diameter and tool length detection function according to claim 1, characterized in that, A swivel base (22) is rotatably arranged at the end of the detection bracket (2), and the positioning plate (3) is rotatably arranged on the swivel base (22); A first flexible member (32) is arranged on the swivel base (22) to keep the positioning plate (3) at a predetermined angle, and the tool length detection unit is used to detect the force on the first flexible member (32).

4. The structure of a fine boring tool with a tool diameter and tool length detection function according to claim 1, characterized in that, Positioning wheels (31) are symmetrically arranged on the positioning plate (3), and a second flexible member (33) for making the positioning wheels (31) approach each other is arranged on the positioning wheels (31); The tool diameter detection unit is used to detect the force on the second flexible member (33).

5. The structure of a fine boring tool with a tool diameter and tool length detection function according to claim 1, characterized in that, The positioning component (7) further includes a movable frame (71) slidably arranged in the cavity (12) along the width direction and slidably matched with the detection bracket (2), and an elastic flap (72) is fixedly arranged on the movable frame (71).

6. The structure of a fine boring tool with a tool diameter and tool length detection function according to claim 5, characterized in that, The elastic flap (72) has a concave state for driving the rotating member (75).

7. The structure of a fine boring tool with a tool diameter and tool length detection function according to claim 5, characterized in that, A heat conduction plate (81) is fixedly arranged on the clamp (8), and a clamping groove (721) for restricting the end of the heat conduction plate (81) is opened on the elastic flap (72).

8. The structure of a fine boring tool with a tool diameter and tool length detection function according to claim 7, characterized in that, A plurality of heat transfer fins (82) are arranged on the heat conduction plate (81).

9. The structure of a fine boring tool with a tool diameter and tool length detection function according to claim 1, characterized in that, It further includes a liquid outlet (13) opened on the tool body (1) and facing the tool (6) and a control cavity (92) opened on the liquid outlet (13). A piston (93) that moves due to temperature change is arranged in the control cavity (92).

10. The structure of a fine boring tool with a tool diameter and tool length detection function according to claim 1, characterized in that, An adjustment knob (4) for driving the detection bracket (2) is rotatably arranged on the tool body (1).

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