Multifunctional turning and boring cutter

By designing a multi-functional boring tool and utilizing structures such as fixing bolts, pins, screws, and mounting blocks, the end face and boring hole of the motorcycle brake drum can be machined in one go, solving the instability problem caused by multiple clamping in the existing technology and improving machining stability and efficiency.

CN223819673UActive Publication Date: 2026-01-23XUTAI PRECISION TOOLS (TAIZHOU) CO LTD
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Patent Information

Application Number
CN202520295550.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-02-24
Publication Date
2026-01-23
Estimated Expiration
2035-02-24

AI Technical Summary

Technical Problem

In the existing technology, the machining of motorcycle brake drums requires multiple clamping operations, resulting in insufficient tool positions, unstable brake drum dimensions and spline end faces, and making it impossible to complete the machining in one go.

Method used

A multifunctional turning and boring tool was designed, comprising first and second inserts, which are respectively installed in different slots in the tool holder body. The inserts are securely installed by means of fixing bolts, pins, screws and mounting blocks, so as to ensure that the end face and boring hole are completed in one go on the CNC machine tool.

Benefits of technology

This technology enables one-time machining of the end face and boring hole of the motorcycle brake drum, avoiding instability in dimensions and spline end face, and improving machining stability and work efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a multifunctional turning and boring cutter, and belongs to the field of turning and boring cutters. Comprising a knife handle body; the first mounting groove is formed in the knife handle body; the second mounting groove is formed in the cutter handle body; the first blade is detachably mounted on the first mounting groove; the second blade is detachably mounted on the second mounting groove; and the stabilizing assembly is detachably installed on the knife handle body, corresponds to the first blade and is used for reinforcing the first blade. The multifunctional turning and boring cutter has the beneficial effect of being good in stability.
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Description

Technical Field

[0001] This application relates to the field of turning boring tools, and more specifically, to a multifunctional turning boring tool. Background Technology

[0002] Drum brakes utilize a brake transmission mechanism to press the brake shoes against the brake friction pads inside the brake drum, thereby generating braking force. This allows the wheels to slow down or stop within the shortest distance as needed, ensuring driving safety and preventing the car from sliding automatically when parked.

[0003] The product structure can be referenced from the multi-functional turning, boring, and milling cutter bar for a turning-milling composite machine tool disclosed in Chinese Patent Document 202220212695.X. This application designs a cutter bar with two protruding parts at one end, symmetrically arranged around the center of the end face. Each protruding part has a cutter body groove. The insert is mounted on the cutter body groove via a fixing device, which includes a pressing mechanism, a telescopic mechanism, and a linkage mechanism. The linkage mechanism connects the pressing mechanism and the telescopic mechanism. An installation rod is provided on the insert, with an installation opening on its side wall corresponding to the mounting part. During use, the installation rod presses against the pressing mechanism, and the linkage mechanism drives the telescopic mechanism, causing it to move into the installation opening and lock the installation rod, thus mounting the insert on the cutter body groove. During machining, one insert performs roughing and finishing on the material of the wheel hub brake part to ensure that the radial and axial dimensions meet the requirements. The other insert performs roughing and finishing on the spline end face and radial side of the wheel hub center to ensure dimensional stability. This saves time on insert replacement and improves work efficiency.

[0004] However, in this patent, when machining the motorcycle brake drum, it is necessary to machine the end face of the motorcycle brake drum and the boring hole. Since the tool holder body can only install one cutting tool at a time, the tool clamping position is insufficient, and the workpiece needs to be disassembled for secondary processing, resulting in unstable brake drum size and spline end face runout.

[0005] A multi-functional turning and boring tool with good stability is now provided. Utility Model Content

[0006] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0007] To address the technical problems mentioned in the background section above, some embodiments of this application provide a multifunctional turning boring tool, comprising: a tool holder body; a first mounting groove formed on the tool holder body; a second mounting groove formed on the tool holder body; a first cutting blade detachably mounted on the first mounting groove; a second cutting blade detachably mounted on the second mounting groove; and a stabilizing component detachably mounted on the tool holder body, the stabilizing component corresponding to the first cutting blade and used to reinforce the first cutting blade.

[0008] When boring and machining the end face of a motorcycle brake drum is required, the tool holder body can be mounted on a CNC machine tool. The motorcycle brake drum can then be fixed using external equipment. The tool holder body can then be moved on the CNC machine tool to allow the second cutting tool to enter the motorcycle brake drum. The tool holder body can then be rotated, causing the second cutting tool to rotate and thus bore the motorcycle brake drum. Next, the tool holder body can be moved again, allowing the first cutting tool to contact the end face of the motorcycle brake drum. The first cutting tool can then be rotated on the CNC machine tool to machine the end face of the motorcycle brake drum. This process eliminates the need to disassemble the motorcycle brake drum for secondary machining, preventing instability in brake drum dimensions and spline end face runout. It also solves the problem of insufficient tool clamping positions on the equipment and addresses product concentricity, flatness, and ET value tolerances in a single machining operation.

[0009] Furthermore, when installing the first blade, it can be installed into the first mounting slot. Then, a mounting bolt is passed through the first through hole and threaded into the first threaded groove. The end of the mounting bolt limits the first blade, facilitating disassembly and installation. Similarly, a pin screw is provided, which passes through the second through hole and is threaded into the second threaded groove to fix the second blade and facilitate disassembly. After the second blade is installed, the mounting block can be installed, and a fixing bolt is passed through the third through hole and threaded into the third threaded groove to install the mounting block. Under the action of the fixing rod, the mounting block contacts the second blade, thereby reinforcing the second blade and improving the stability of the second blade installation.

[0010] In some embodiments, the first blade has a first through hole and the handle body has a first threaded groove. A mounting bolt is threaded onto the first threaded groove, and the mounting bolt passes through the first through hole, with the end of the mounting bolt corresponding to the first blade.

[0011] In some embodiments, the second blade has a second through hole and the tool holder body has a second threaded groove, the second threaded groove is threaded with a pin screw, the pin screw passes through the second through hole and corresponds to the second blade.

[0012] In some embodiments, the stabilizing component includes a mounting block, a fixing groove is provided on the tool holder body, the mounting block is movably disposed on the fixing groove, and a fixing rod is fixedly connected to the mounting block, with the fixing rod abutting against the second blade.

[0013] In some embodiments, the tool holder body has a third threaded groove, and the fixing rod has a third through hole. A fixing bolt is threaded onto the third threaded groove, and the fixing bolt passes through the third through hole. The end of the fixing bolt corresponds to the mounting block.

[0014] In some implementations, the fixing rod is L-shaped.

[0015] In some implementations, the mounting block is cylindrical.

[0016] The beneficial effects of this application are as follows:

[0017] 1. By setting the first and second cutting blades on the tool holder body, the end face and boring hole of the motorcycle brake drum can be machined sequentially without disassembling the motorcycle brake drum for secondary machining. This prevents instability in the size of the brake drum and the spline end face, solves the problem of insufficient tool clamping positions in the equipment, and solves the problems of product concentricity, flatness, and ET value tolerance in one machining operation, thus improving work efficiency.

[0018] 2. By setting fixing bolts and pin screws, the fixing bolts facilitate the disassembly and installation of the second blade, and the pin screws facilitate the disassembly and installation of the first blade.

[0019] 3. By setting up mounting blocks, fixing bolts, and fixing rods, with the fixing rods abutting against the second blade, the stability of the second blade is further improved. Attached Figure Description

[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0021] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.

[0022] In the attached diagram:

[0023] Figure 1 This is an overall schematic diagram based on an embodiment of this application;

[0024] Figure 2 It is a sectional view;

[0025] Figure 3This is a cross-sectional view of the knife handle body;

[0026] Figure 4 yes Figure 3 A magnified structural diagram of A in the middle;

[0027] Figure 5 yes Figure 3 A magnified structural diagram of B in the diagram.

[0028] Figure label:

[0029] 1. Handle body; 2. Mounting block; 3. Fixing bolt; 4. Fixing rod; 5. Pin screw; 6. Second blade; 7. Second mounting groove; 8. First blade; 9. First through hole; 10. First threaded groove; 11. Mounting bolt; 12. Fixing groove; 13. First mounting groove; 14. Second threaded groove; 15. Third threaded groove; 16. Second through hole; 17. Third through hole. Detailed Implementation

[0030] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0031] It should also be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.

[0032] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.

[0033] It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0034] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0035] Reference Figure 1-5A multifunctional turning boring tool includes: a tool holder body 1, a first mounting slot 13, a second mounting slot 7, a first cutting insert 8, and a stabilizing component. The first mounting slot 13 is formed on the tool holder body 1. The second mounting slot 7 is formed on the tool holder body 1. The first cutting insert 8 is detachably mounted on the first mounting slot 13. The second cutting insert 8 is detachably mounted on the second mounting slot 7. The stabilizing component is detachably mounted on the tool holder body 1 and corresponds to the first cutting insert 8, used to reinforce the first cutting insert 8. By setting the stabilizing component, the second cutting insert 6 is reinforced, improving the stability of the second cutting insert 6 during operation.

[0036] The first blade 8 has a first through hole 9, and the handle body 1 has a first threaded groove 10. A mounting bolt 11 is threaded onto the first threaded groove 10, and the mounting bolt 11 passes through the first through hole 9. The end of the mounting bolt 11 corresponds to the first blade 8. By setting the mounting bolt 11, it is convenient to disassemble and install the first blade 8.

[0037] The second blade 6 has a second through hole 16, and the handle body 1 has a second threaded groove 14. A pin screw 5 is threaded onto the second threaded groove 14, and the pin screw 5 passes through the second through hole 16 and corresponds to the second blade 6. By setting the second blade 6, it is convenient to install and remove the second blade 6.

[0038] The stabilizing component includes a mounting block 2. A fixing groove 12 is provided on the tool holder body 1, and the mounting block 2 is movably mounted on the fixing groove 12. A fixing rod 4 is fixedly connected to the mounting block 2, and the fixing rod 4 abuts against the second blade 6. The fixing rod 4 is L-shaped. Under the action of the fixing rod 4, it abuts against the second blade 6, thereby improving the stability of the installation of the second blade 6.

[0039] The tool holder body 1 has a third threaded groove 15, and the fixing rod 4 has a third through hole 17. The third threaded groove 15 is threaded with a fixing bolt 3, and the fixing bolt 3 passes through the third through hole 17. The end of the fixing bolt 3 corresponds to the mounting block 2, and the mounting block 2 is cylindrical.

[0040] Working process: When it is necessary to machine the boring hole and end face of the motorcycle brake drum, the tool holder body 1 can be installed on the CNC machine tool. Then, the motorcycle brake drum can be fixed by external equipment. Next, the tool holder body 1 can be moved by the CNC machine tool so that the second cutting tool 6 enters the motorcycle brake drum. Then, the tool holder body 1 can be rotated so that the second cutting tool 6 rotates, thereby machining the boring hole of the motorcycle brake drum. Then, the tool holder body 1 can be moved so that the first cutting tool 8 contacts the end face of the motorcycle brake drum. Then, the first cutting tool 8 can be driven to rotate by the CNC machine tool, thereby machining the end face of the motorcycle brake drum. It is not necessary to disassemble the motorcycle brake drum for secondary machining, which prevents the brake drum size, spline end face runout and other unstable situations. It solves the problem of insufficient tool clamping positions of the equipment, and solves the product concentricity, flatness and ET value tolerance in one machining.

[0041] Furthermore, when installing the first blade 8, it can be installed onto the first mounting groove 13. Then, the mounting bolt 11 passes through the first through hole 9 and is threaded into the first threaded groove 10. Under the action of the end of the mounting bolt 11, the first blade 8 is limited, facilitating disassembly and installation. Similarly, by setting a pin screw 5, which passes through the second through hole 16 and is threaded into the second threaded groove 14, the second blade 6 is fixed, and the second blade 6 is also easily disassembled. After the second blade 6 is installed, the mounting block 2 can be installed, and the fixing bolt 3 passes through the third through hole 17 and is threaded into the third threaded groove 15, thus installing the mounting block 2. Under the action of the fixing rod 4, it contacts the second blade 6, thereby reinforcing the second blade 6 and improving the stability of the second blade 6 installation.

[0042] The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in the embodiments of this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.

Claims

1. A multi-functional turning and boring tool, comprising: Handle body; Its characteristic is that the multifunctional turning and boring tool further includes: The first mounting slot is formed on the tool holder body; The second mounting slot is provided on the tool holder body; The first blade is detachably mounted on the first mounting slot; The second blade is detachably mounted on the second mounting slot; The stabilizing component is detachably mounted on the tool holder body and corresponds to the first blade to reinforce the first blade.

2. The multifunctional turning and boring tool according to claim 1, characterized in that: The first blade has a first through hole, and the handle body has a first threaded groove. A mounting bolt is threaded onto the first threaded groove, and the mounting bolt passes through the first through hole, with the end of the mounting bolt corresponding to the first blade.

3. A multifunctional turning and boring tool according to claim 1, characterized in that: The second blade has a second through hole, and the handle body has a second threaded groove. A pin screw is threaded onto the second threaded groove, and the pin screw passes through the second through hole and corresponds to the second blade.

4. A multifunctional turning and boring tool according to claim 1, characterized in that: The stabilizing component includes a mounting block, a fixing groove is provided on the tool holder body, the mounting block is movably mounted on the fixing groove, and a fixing rod is fixedly connected to the mounting block, with the fixing rod abutting against the second blade.

5. A multifunctional turning and boring tool according to claim 4, characterized in that: The tool holder body has a third threaded groove, and the fixing rod has a third through hole. A fixing bolt is threaded onto the third threaded groove, and the fixing bolt passes through the third through hole. The end of the fixing bolt corresponds to the mounting block.

6. A multifunctional turning and boring tool according to claim 5, characterized in that: The fixing rod is L-shaped.

7. A multifunctional turning and boring tool according to claim 4, characterized in that: The mounting block is cylindrical.

Citation Information

Patent Citations

  • Multifunctional turning, boring and gear milling cutter bar for turning and milling composite machine tool

    CN217096012U