A precision boring tool structure with tool diameter and tool length detection function

Abstract

The present invention discloses a precision boring tool structure with tool diameter and tool length detection functions, which relates to the technical field of precision boring tools, and includes a tool and a tool body for assembling the tool, including an inner cavity opened in the tool body, in which a positioning assembly is arranged, and the positioning assembly includes a rotating part arranged relatively and rotating; a tool length detection unit and a tool diameter detection unit are arranged on the positioning plate. The precision boring tool structure with tool diameter and tool length detection functions drives the clamp to formally clamp the tool by pushing the detection bracket, avoiding the problem of requiring two hands to limit and tighten respectively, thereby reducing the difficulty of assembly. Moreover, by setting the positioning plate and the tool length and tool diameter detection unit, an inspection is performed each time the tool is assembled, and tools with greater wear are screened out in time. When it is necessary to inspect the tool in the assembled state, the detection bracket is pulled out in the reverse direction, and the tool can be inspected by the positioning plate deflected toward the tool.

Description

Technical Field

[0001] The invention relates to the technical field of precision boring tools, in particular to a precision boring tool structure with tool diameter and tool length detection functions. Background Art

[0002] Fine boring tools are essential tools for precision hole machining in machining, and their machining accuracy directly impacts workpiece quality. During fine boring, tool wear can cause changes in tool diameter and length, which in turn affects machining accuracy. Traditional fine boring tools typically lack tool diameter and length detection capabilities, requiring operators to regularly disassemble the tool and use specialized measuring tools for measurement.

[0003] In conjunction with publication number CN117506554A, a method and device for detecting whether the radial dimension of a boring tool exceeds the limit are disclosed. Before boring processing, the part is first mounted on the machine tool workbench, the boring tool is mounted on the machine tool spindle, and a signal light, a power supply, the machine tool spindle and the machine tool workbench are connected in series to form a circuit; the detection surface of the boring tool diameter detection device is accurately adjusted to the maximum aperture size of the part's inner hole using a rapid positioning element; the rapid positioning element is removed, and the machine tool spindle is first reversed. If the signal light does not light up after the boring tool passes the detection surface of the boring tool diameter detection device, the machine tool spindle is restored to forward rotation and normal cutting speed to start boring. After one processing is completed, the boring tool diameter size is increased, and the inner hole wall of the part is bored. The reverse detection process is repeated each 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 inspected before assembling the tool. This process can easily cause the user to forget, resulting in the assembly of an unmeasured tool. 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-mentioned object, the present invention provides the following technical solution: a fine boring tool structure with tool diameter and tool length detection functions, comprising a tool and a tool body for assembling the tool, including an inner cavity defined in the tool body, in which a positioning assembly is disposed, the positioning assembly comprising a rotating member disposed relative to and rotatably disposed, one end of which is deflected by the tool so that the other end clamps the tool;

[0007] A detection bracket is slidably arranged on the cutter body, and a positioning plate is rotatably arranged on the detection bracket, and the positioning plate has an inclined state to guide the cutter into the inner cavity;

[0008] The positioning plate is provided with a knife length detection unit and a knife radius detection unit;

[0009] The end of the inner cavity is provided with a receiving groove for accommodating the positioning plate in a horizontal state;

[0010] A fixture is slidably arranged in the inner cavity along the width direction of the tool, and moves closer to each other as the detection bracket moves;

[0011] A signal processing unit, which is used to convert the signals of the tool length detection unit and the tool radius detection unit into tool radius and tool length information;

[0012] External display unit, which is used to display tool diameter and tool length information.

[0013] Preferably, the tool length detection unit and the tool radius detection unit both use pressure sensors.

[0014] Preferably, a rotating seat is rotatably provided at the end of the detection bracket, and the positioning plate is rotatably provided on the rotating seat;

[0015] The rotating seat is provided with a first flexible member to keep the positioning plate at a predetermined angle, and the knife length detection unit is used to detect the force applied to the first flexible member.

[0016] Preferably, the positioning plates are symmetrically provided with positioning wheels, and the positioning wheels are provided with second flexible members for bringing the positioning wheels closer to each other;

[0017] The tool radius detection unit is used to detect the force applied to the second flexible member.

[0018] Preferably, the positioning assembly further comprises a movable frame which is slidably arranged in the inner cavity along the width direction and slidably cooperates with the detection bracket, and an elastic paddle is fixedly arranged on the movable frame.

[0019] Preferably, the elastic pick has a concave shape for driving the rotating member.

[0020] Preferably, a heat conducting sheet is fixedly provided on the clamp, and a slot for limiting an end portion of the heat conducting sheet is provided on the elastic pick.

[0021] Preferably, the heat conducting plate is provided with a plurality of heat transfer fins.

[0022] Preferably, the device further comprises a liquid outlet opened on the tool body and facing the tool, and a control chamber opened on the liquid outlet, wherein a piston which moves in response to temperature change is provided in the control chamber.

[0023] Preferably, an adjusting knob for driving the detection bracket is rotatably provided on the blade body.

[0024] In the above-mentioned technical solution, the present invention provides a fine boring tool structure with tool diameter and tool length detection functions, which has the following beneficial effects: by pushing the detection bracket, the fixture is driven to formally clamp the tool, eliminating the problem of requiring two hands to limit and tighten separately, thereby reducing the difficulty of assembly. In addition, by providing a positioning plate and a tool length and tool diameter detection unit, an inspection is performed each time the tool is assembled, and tools with severe wear are promptly screened out. When it is necessary to inspect the tool in the assembled state, the detection bracket is withdrawn in the reverse direction, and the positioning plate can be deflected toward the tool to achieve inspection of the tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0026] Figure 1 An overall three-dimensional schematic diagram provided for an embodiment of the present invention;

[0027] Figure 2 A schematic diagram of a cutaway structure of a blade provided by an embodiment of the present invention;

[0028] Figure 3 A schematic diagram of the structure of the detection bracket and fixture provided in an embodiment of the present invention;

[0029] Figure 4 A schematic diagram of the structure of the detection bracket and positioning plate provided in an embodiment of the present invention;

[0030] Figure 5 A schematic structural diagram of a clamping assembly provided in an embodiment of the present invention;

[0031] Figure 6 A schematic diagram of the structure of the control cavity inside the blade body provided by an embodiment of the present invention;

[0032] Figure 7 A schematic diagram of the control chamber and sealing chamber structure provided in an embodiment of the present invention;

[0033] Figure 8 A schematic diagram of a detection process provided by an embodiment of the present invention;

[0034] Figure 9 A schematic diagram of the initial state of the detection bracket and the positioning plate provided in an embodiment of the present invention;

[0035] Figure 10 This is a schematic diagram of the active states of the detection bracket and the positioning plate provided in an embodiment of the present invention.

[0036] Description of reference numerals:

[0037] 1. Cutter body; 11. Side groove; 12. Inner cavity; 13. Liquid outlet; 14. First spring; 2. Detection bracket; 21. Rack; 22. Rotating seat; 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. Fixing bolt; 6. Cutter; 7. Positioning assembly; 71. Movable frame; 72. Elastic pick; 721. Slot; 73. Block; 74. Elastic member; 75. Rotating member; 76. Pressing rod; 77. Slide rail; 8. Clamp; 81. Heat conducting plate; 82. Heat transfer fin; 83. Slider; 9. Connecting pipe; 91. Liquid inlet chamber; 92. Control chamber; 93. Piston; 94. Sealing chamber; 95. Second spring; 100. Signal processing unit; 101. Wireless transmission module; 102. External display unit. DETAILED DESCRIPTION

[0038] In order 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.

[0039] like Figure 1-10 As shown, a fine boring tool structure with tool diameter and tool length detection function 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 component 7 is arranged, and the positioning component 7 includes a rotating member 75 (such as a rotating member 75) that is relatively and rotatably arranged. Figure 5 As shown), one end of the tool 6 is pressed and deflected so that the other end clamps the tool 6;

[0040] The detection bracket 2 is slidably arranged on the blade body 1, and a positioning plate 3 is rotatably arranged on the detection bracket 2. The positioning plate 3 has an inclined state to guide the tool 6 into the inner cavity 12 (such as Figure 2 shown);

[0041] The positioning plate 3 is provided with a knife length detection unit and a knife radius detection unit;

[0042] A receiving groove for accommodating the positioning plate 3 in a horizontal state is provided at the end of the inner cavity 12;

[0043] The clamps 8 are symmetrically and slidably arranged in the inner cavity 12, and move closer to each other along the width direction of the inner cavity 12 as the detection bracket 2 moves (such as Figure 3 shown);

[0044] A signal processing unit 100, which is used to convert the signals of the tool length detection unit and the tool radius detection unit into tool radius and tool length information;

[0045] The external display unit 102 is used to display tool diameter and tool length information.

[0046] Specifically, the rotating member 75 is divided into a first end and a second end according to the rotating axis. The rotating member 75 is provided with an elastic member 74 for maintaining a predetermined angle, and the first end of the rotating member 75 is provided with a pressing rod 76 (such as Figure 5 As shown in FIG), the tool 6 moves upward during assembly and enters the inner cavity 12. Since the positioning plate 3 is in an inclined state by default (as shown in FIG). Figure 1 As shown in the figure, the tool 6 slides along the end surface of the positioning plate 3. During the sliding process, the outer wall of the tool 6 squeezes the pressing rod 76 to both sides, causing the pressing rod 76 to deflect from the center to both sides. The second end of the rotating member 75 is passively deflected centripetally and finally located at the bottom of the tool 6 for clamping. The squeezing of the 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 is directed from both sides to the tool 6, thereby preliminarily clamping the tool 6. The preliminarily clamping only requires one hand to squeeze the tool 6 into the inner cavity 12.

[0047] Then push the detection bracket 2, the end of the detection bracket 2 located in the blade body 1 is fixedly provided with a transmission block 23, and the clamp 8 is fixedly provided with a slider 83 (such as Figure 3 As the detection bracket 2 slides into the cutter body 1, the transmission block 23 squeezes the slider 83, causing the two clamps 8 to move closer to each other and clamp the cutter 6, and then through the side grooves 11 opened on both sides of the cutter body 1 (as shown). Figure 1 As shown), the fixing bolt 5 corresponds to the through hole opened on the transmission block 23 and is screwed into the fixing bolt 5 to limit the position of the detection bracket 2 and the fixture 8, thereby completing the clamping and fixing of the tool 6.

[0048] Furthermore, during the initial clamping process, since the tool 6 slides along the positioning plate 3, the tool length detection unit and the tool diameter detection unit can use laser sensors to emit laser to the surface of the tool 6 and receive it through reflection, thereby obtaining contour image data of the surface of the tool 6, or the tool length detection unit and the tool diameter detection unit can use image detection units to record the image of the surface of the tool 6 by shooting continuous images, which can be used as a basis for judging the tool length, tool diameter and wear condition, or other sensors known to those skilled in the art can be used; and the corresponding tool length and tool diameter information is generated through the signal processing unit 100, and the wireless transmission module 101 is also included to transmit the tool length and tool diameter information to the 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 obtain the current usage status of the tool 6 in time each time the tool 6 is disassembled and assembled, and the tool 6 with a larger degree of wear can be replaced in time.

[0049] After the tool 6 is assembled, the positioning plate 3 is manually rotated to a horizontal position, 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 and does not interfere with the normal use of the tool 6. When it is necessary to inspect the tool 6 in the assembled state, it is only necessary to loosen the fixing bolt 5 and then withdraw the detection bracket 2 in the reverse direction. The tool 6 can be inspected by deflecting the positioning plate 3 toward the tool 6. In this process, the initial clamping of the positioning assembly 7 can prevent the tool 6 from falling off during the inspection process.

[0050] In this technique, the clamp 8 formally clamps the tool 6 by pushing against the detection bracket 2, eliminating the need for two hands to separately position and tighten the tool, thus reducing assembly difficulty. Furthermore, by providing the positioning plate 3 and the tool length and tool diameter detection units, an inspection is performed each time the tool 6 is assembled, allowing for the timely screening of tools 6 with significant wear. When it is necessary to inspect the assembled tool 6, the detection bracket 2 is withdrawn in the opposite direction, allowing inspection of the tool 6 to be achieved by deflecting the positioning plate 3 toward the tool 6.

[0051] 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;

[0052] A first flexible member 32 is provided 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 .

[0053] 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 via a transmission rod 26 to fix the angle of the rotating seat 22 so that relative rotation does not occur during the detection process (as shown). Figure 4 As shown in FIG), a first flexible member 32 is provided between the rotating seat 22 and the positioning plate 3, and 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). 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 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 of the tip of the tool, and the positioning plate 3 deflects counterclockwise (as shown). 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 adopts a pressure sensor, which is mounted 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 is reduced, the force on the first flexible member 32 is weakened and a signal is transmitted 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.

[0054] As another embodiment further provided by the present invention, positioning wheels 31 are symmetrically provided on the positioning plate 3, and second flexible members 33 are provided on the positioning wheels 31 for bringing the positioning wheels 31 closer to each other;

[0055] The tool radius detection unit is used to detect the force applied to the second flexible member 33 .

[0056] Specifically, when the tool 6 is guided into the predetermined position, the tip of the tool is squeezed between the two positioning wheels 31, and the two positioning wheels 31 are squeezed to both sides by the tip of the tool. The second flexible member 33 is located between the two positioning wheels 31 (such as Figure 4 As shown, the second flexible member 33 extends, and the tool radius detection unit, a pressure sensor mounted on the second flexible member 33, detects the force applied. Because the positioning plate 3 is pushed against by the tool tip and adaptively deflects, the positioning wheel 31 is always kept in close contact with both sides of the tool tip 6, reducing manual adjustment operations.

[0057] As another embodiment further provided by the present invention, the positioning assembly 7 further includes a movable frame 71 slidably disposed in the inner cavity 12 along the width direction and slidably matched with the detection bracket 2, and an elastic paddle 72 is fixedly disposed on the movable frame 71.

[0058] Specifically, the movable frame 71 slides along the width direction of the inner cavity 12, and a slide rail 77 is provided on the movable frame 71 for the detection bracket 2 to slide along the length direction (such as Figure 3 As shown), at the same time, the slide rail 77 and the cam 25 form a locking relationship (as shown Figure 4 As shown), the cam 25 is driven by the rotating seat 22 through the transmission rod 26, and a groove for accommodating the end of the cam 25 is provided on the slide rail 77. When the detection bracket 2 is not pushed, the end side wall of the cam 25 is close to the inner wall of the groove, as shown in FIG. Figure 9 As shown, when there is no external force, the positioning plate 3 drives the rotating seat 22 to deflect counterclockwise downward, causing the cam 25 to have a deflection force. At this time, the supporting force provided by the side of the groove to the cam 25 offsets the deflection force. That is, under the obstruction of the slide rail 77, the angle of the cam 25 and the rotating seat 22 remains fixed and will not rotate relative to the detection bracket 2. In the process of pushing the detection bracket 2, the detection bracket 2 slides toward the movable frame 71, and the cam 25 will hit the inner wall of the groove, causing the cam 25 to deflect clockwise (by 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), the rotation of the cam 25 drives the transmission rod 26, causing the swivel seat 22 to swing clockwise, and under the pulling of the first flexible member 32, the positioning plate 3 is driven to deflect to a parallel state, so that the state of the positioning plate 3 is switched while pushing the detection bracket 2.

[0059] As another embodiment further provided by the present invention, the elastic paddle 72 has a concave state for driving the rotating member 75 .

[0060] Specifically, the two elastic paddles 72 are in a bulging state by default and are symmetrically arranged in an eight-shaped shape, such as Figure 5 As shown, the first end of the elastic paddle 72 is fixedly provided on the movable frame 71, and the second end is in a nest shape. A blocking block 73 is fixedly provided on the movable frame 71. The elastic paddle 72 is kept in the default state by overlapping the blocking block 73 through the nest 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.

[0061] When the tool 6 is assembled upward, the two elastic paddles 72 in the bulging state have a guiding and centering effect on the tool 6 to prevent the tool 6 from axial deviation 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 width direction within the inner cavity 12, and the two movable frames 71 move away from each other (such as Figure 2 As shown), a first spring 14 is provided 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. At this time, the detection bracket 2 slides along the end of the rotating shaft 24 so that the positioning plate 3 remains in the center of the rotating shaft 24, and the first spring 14 is stretched and stored.

[0062] At the same time, the outer wall of the cutter 6 pushes the two elastic picks 72 to deform as shown in FIG. 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 move closer to each other. The change in the state of the elastic paddle 72 drives the pressure rod 76 to deflect to both sides, and causes the elastic member 74 to be squeezed. 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, it is only necessary to move the tool 6 downward, and the tool 6 presses the two rotating members 75, causing the pressure rod 76 to deflect and drive the elastic paddle 72 to recover.

[0063] Moreover, at this time, the elastic paddle 72 is completely in contact with the outer wall of the tool 6, and drives the movable frame 71 to adapt to the diameter of the tool 6, and drives the distance between the two detection brackets 2 to be adjusted (such as Figure 2 As shown in the figure), the distance between the detection brackets 2 corresponding to the 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 along the length direction, the transmission block 23 first approaches the slider 83 in its movable stroke until the gap is eliminated, and then presses the slider 83, that is, the actual pressed stroke of the slider 83 is shortened, so that the stroke of the two fixtures 8 approaching each other is shortened, thereby avoiding excessive squeezing of the tool 6 with a larger outer diameter, and being used to adapt to the tool 6 whose outer diameter fluctuates during the production process, thereby improving the fault tolerance of the device.

[0064] As another embodiment further provided by the present invention, a heat conducting sheet 81 is fixedly provided on the clamp 8 , and a slot 721 for limiting an end portion of the heat conducting sheet 81 is provided on the elastic pick 72 .

[0065] Specifically, such as Figure 5 As shown, when the elastic paddle 72 is in the concave position, the slot 721 automatically opens to form an introduction space that is larger on the outside and smaller on the inside. As the two clamps 8 approach each other, the heat conducting plate 81 is driven toward the tool 6, and the end of the heat conducting plate 81 enters the slot 721 along the introduction space, allowing the heat conducting plate 81 to contact the tool 6 for heat transfer, thereby reducing the high heat generated by the tool 6 during boring. Because the elastic paddle 72 provides a more "soft" grip on the tool 6, it can mitigate the vibration transmitted during a rigid connection, avoiding the problem of collision between the high-frequency vibration generated by the boring process of the tool 6 and the heat conducting plate 81, thereby extending the service life of the heat conducting plate 81.

[0066] As another embodiment further provided by the present invention, it also includes a liquid outlet 13 opened on the tool body 1 and facing the tool 6, and a control chamber 92 opened on the liquid outlet 13, and a piston 93 that moves in response to temperature changes is provided in the control chamber 92.

[0067] Specifically, a liquid inlet cavity 91 is provided at the axis of the blade body 1, and a connecting pipe 9 is provided on the liquid inlet cavity 91. The piston 93 separates the control cavity 92 into a sealing cavity 94 and a liquid cavity, wherein the liquid cavity is a bucket-shaped structure, and the connecting pipe 9 and the liquid outlet 13 are respectively opened at both ends of the liquid cavity (such as Figure 6 As shown in FIG, a plurality of heat transfer fins 82 are slidingly provided on the heat conducting sheet (81), and the ends of the heat transfer fins 82 are fixedly provided in a sealed cavity 94, and the sealed cavity 94 is filled with air. As the heat transfer fins 82 transfer temperature changes, the air expands and pushes the piston 93 to slide. A second spring 95 is provided on the piston 93 to restore the piston 93 to its initial state without the action of external force.

[0068] The structure of the piston 93 and the control chamber 92 is as follows Figure 6 and Figure 7 As shown, the piston 93 is a tapered structure with a larger upper portion and a smaller lower portion. In the initial state, the wider portion of the piston 93 abuts against the ports of the connecting pipe 9 and the liquid outlet 13 (as shown in FIG. Figure 7 As shown in the middle left figure), after the volume of the sealed chamber 94 is expanded, the piston 93 moves upward and the narrower part moves to the port of the connecting pipe 9 and the liquid outlet 13, so that the space for liquid inlet is expanded (as shown in the middle left figure). Figure 7 As shown in the middle right figure, the amount of liquid entering increases. Specifically, as the heat transfer from the heat conducting sheet 81 and the heat transfer fins 82 increases, the volume of the sealed cavity 94 increases, and the amount of liquid entering increases. The cooling effect on the tool 6 changes with temperature. Furthermore, because the liquid outlet 13 is tilted toward the tool 6, the tool 6 rotates at high speed during boring. At this time, the coolant flows out of the liquid outlet 13 under the centrifugal force and flushes the tip of the tool 6.

[0069] As another embodiment further provided by the present invention, an adjusting knob 4 for driving the detection bracket 2 is rotatably provided on the blade body 1 .

[0070] Specifically, a gear 41 is fixedly mounted on the adjustment knob 4, and the gear 41 is rotated by turning the adjustment knob 4. A rack 21 meshing with the gear 41 is fixedly mounted on the detection bracket 2. Since the cutter 6 extends a certain distance beyond the cutter body 1, when a detection device is mounted on the cutter body 1, the extension of the detection device and the cutter body 1 will cause uneven gravity on the entire cutter body 1. When the cutter body 1 rotates at high speed, the centrifugal force will amplify the above problem and cause the cutter 6 to vibrate, affecting the machining accuracy. However, by adopting the structure of the detection bracket 2 and the adjustment knob 4, by retracting the detection bracket 2 into the cutter body 1 along the length direction and controlling the position of the detection bracket 2 to be located at the axis and close to the opposite direction of the extension of the cutter 6, the weight of the extended portion of the cutter 6 can be balanced by the weight of the detection bracket 2, thereby achieving a self-balancing effect.

[0071] Furthermore, when the blade diameter of the tool 6 is too large, the extension distance of the detection bracket 2 in the longitudinal direction will be limited by the linkage relationship between the clamp 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 (such as Figure 2 As shown in FIG5 ), 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, the transmission block 23 first approaches the slider 83 during its movable stroke, and then presses the slider 83. The travel of the transmission block 23 approaching the slider 83 compensates for the part of the travel lost by the detection bracket 2 due to the increase in the outer diameter of the tool 6, thereby reducing the influence of the tool diameter change on the distance of the detection bracket 2.

[0072] Working principle: When assembling the tool 6 upward, the two elastic paddles 72 in the bulging state have a guiding and centering effect on the tool 6 to prevent the tool 6 from axial deviation 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 width direction in the inner cavity 12, and the two movable frames 71 move away from each other (such as Figure 2 As shown), at this time, the detection bracket 2 slides along the end of the rotating shaft 24 so that the positioning plate 3 remains in the center of the rotating shaft 24, and a first spring 14 is provided between the detection brackets 2. At this time, the two movable frames 71 drive the two detection brackets 2 away from each other, and the first spring 14 is stretched and stored.

[0073] At the same time, the outer wall of the cutter 6 pushes the two elastic picks 72 to deform as shown in FIG. Figure 5 In the dashed state shown, the elastic paddle 72 no longer blocks the tool 6, eliminating the obstruction between the two movable frames 71 and releasing the elastic potential energy of the first spring 14. The two detection brackets 2 drive the two movable frames 71 closer together. The change in the state of the elastic paddle 72 causes the pressure rod 76 to deflect laterally, squeezing the elastic member 74. The second end of the rotating member 75 then passively deflects centripetally, gripping the underside of the tool 6 for initial clamping.

[0074] 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 the predetermined position. At the same time, the tip of the tool 6 applies a force to the positioning plate 3 so that the angle of the positioning plate 3 is consistent with the inclination of the tip of the tool. The positioning plate 3 deflects counterclockwise, and in this process, the first flexible member 32 extends (as shown in FIG. Figure 3 As shown in the figure), the tool length detection unit adopts a pressure sensor, which is mounted 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 is reduced, the force on the first flexible member 32 is weakened and a signal is transmitted 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.

[0075] When the tool 6 is guided into the predetermined position, the tip of the tool is squeezed between the two positioning wheels 31, and the two positioning wheels 31 are squeezed to both sides by the tip of the tool. The second flexible member 33 is located between the two positioning wheels 31 (as shown in FIG. Figure 4 As shown), at this time, the second flexible member 33 is extended, and the tool radius detection unit adopts a pressure sensor, which is assembled on the second flexible member 33 and detects the force condition.

[0076] The corresponding tool length and tool diameter information is generated through the signal processing unit 100, and the wireless transmission module 101 is also included to transmit the tool length and tool diameter information to the 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 obtain the current usage status of the tool 6 in time each time the tool 6 is disassembled and assembled, and the tool 6 with a larger degree of wear can be replaced in time.

[0077] Then push the detection bracket 2, the end of the detection bracket 2 located in the blade body 1 is fixedly provided with a transmission block 23, and the clamp 8 is fixedly provided with a slider 83 (such as Figure 3 As the detection bracket 2 slides into the cutter body 1, the transmission block 23 squeezes the slider 83, causing the two clamps 8 to move closer to each other and clamp the cutter 6, and then through the side grooves 11 opened on both sides of the cutter body 1 (as shown). Figure 1 As shown), the fixing bolt 5 corresponds to the through hole opened on the transmission block 23 and is screwed into the fixing bolt 5 to limit the position of the detection bracket 2 and the fixture 8, thereby completing the clamping and fixing of the tool 6.

[0078] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A fine boring tool structure with tool diameter and tool length detection functions, comprising a tool (6) and a tool body (1) for assembling the tool (6), characterized in that: The tool comprises an inner cavity (12) formed in the tool body (1), wherein a positioning assembly (7) is provided therein, wherein the positioning assembly (7) comprises a rotating member (75) relatively and rotatably arranged, one end of which is pressed and deflected by the tool (6) so that the other end clamps the tool (6); A detection bracket (2) is slidably arranged on the knife body (1), and a positioning plate (3) is rotatably arranged on the detection bracket. The positioning plate (3) has an inclined state to guide the knife (6) into the inner cavity (12); A knife length detection unit and a knife radius detection unit are provided on the positioning plate (3); A receiving groove for accommodating the positioning plate (3) in a horizontal state is provided at the end of the inner cavity (12); A clamp (8) is slidably arranged in the inner cavity (12) along the width direction of the tool (6) and approaches each other as the detection bracket (2) moves; A signal processing unit (100) for converting signals from a tool length detection unit and a tool radius detection unit into tool radius and tool length information; An external display unit (102) is used to display tool diameter and tool length information.

2. A fine boring tool structure with tool diameter and tool length detection function according to claim 1, characterized in that: The knife length detection unit and the knife radius detection unit both use pressure sensors.

3. The fine boring tool structure with tool diameter and tool length detection function according to claim 1, characterized in that: 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 provided on the rotating seat (22) to enable the positioning plate (3) to maintain a predetermined angle, and a knife length detection unit is used to detect the force applied to the first flexible member (32).

4. The fine boring tool structure with 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 second flexible members (33) are arranged on the positioning wheels (31) for bringing the positioning wheels (31) closer to each other; The tool radius detection unit is used to detect the force applied to the second flexible member (33).

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

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

7. The fine boring tool structure with tool diameter and tool length detection function according to claim 5, characterized in that: A heat conducting sheet (81) is fixedly provided on the clamp (8), and a slot (721) for limiting the end of the heat conducting sheet (81) is provided on the elastic pick (72).

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

9. The fine boring tool structure with tool diameter and tool length detection function according to claim 1, characterized in that: It also includes a liquid outlet (13) opened on the cutter body (1) and facing the cutter (6), and a control chamber (92) opened on the liquid outlet (13), wherein a piston (93) that moves in response to temperature changes is provided in the control chamber (92).

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

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