A new type of fine boring cutter

Abstract

This utility model discloses a novel precision boring tool, comprising a pull stud, a tool holder body, a tool shank, a tool shank adjusting flange, and a cutting tool mechanism. The pull stud has an external thread on its outer bottom. The top of the tool holder body is connected to the pull stud, and the bottom edge of the outer side of the tool holder body has an outer diameter scale. The tool shank is locked to the bottom of the tool holder body. The tool shank adjusting flange is located on the outer side of the tool shank and is used to adjust the rotation angle of the tool shank. The cutting tool mechanism is connected to the tool shank and is used to mount the precision boring tool. In this utility model, the tool holder and tool shank are connected and fixed through an eccentric precision hole. During fine adjustment, different rotation angles are controlled, achieving a tool tip size adjustment range of -20 microns to +20 microns. Compared to other precision boring tool shanks, this novel small-range fine-adjustment precision boring tool has a simple structure, lower design and processing costs, thereby reducing tool procurement costs and, consequently, reducing part processing costs.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, specifically a new type of precision boring tool. Background Technology

[0002] In the machining industry, high-precision boring tools are often required for machining precision holes;

[0003] The precision boring tools widely used in the market today are adjustable. To increase practicality and versatility, the adjustable machining diameter range of these boring tools is generally quite large, such as 10-50mm. To achieve this effect and ensure accuracy, the design of this adjustable tool holder is quite complex, requiring the use of precision screws and control mechanisms such as sliders. Therefore, the procurement cost of this tool holder is relatively high, thereby increasing the processing cost. Utility Model Content

[0004] The purpose of this utility model is to provide a new type of precision boring tool. Combining the existing precision boring machining process and the usage of existing precision boring tools, a new type of small-range fine adjustment precision boring tool is designed and developed. With a simple structural design, the tool procurement cost is reduced, thereby solving the above-mentioned technical problems.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a novel precision boring tool, comprising a pull stud, a tool holder body, a tool shank, a tool shank adjusting flange, and a cutting tool mechanism. The pull stud has an external thread at its bottom outer side. The top of the tool holder body is connected to the pull stud, and the bottom edge of the tool holder body has an outer diameter numerical scale. The tool shank is locked to the bottom of the tool holder body. The tool shank adjusting flange is located on the outside of the tool shank, and a mark is provided on the tool shank adjusting flange corresponding to the tool tip orientation, and the mark matches the outer diameter numerical scale. The tool shank adjusting flange is used to adjust the rotation angle of the tool shank. The cutting tool mechanism is connected to the tool shank and is used to mount the precision boring tool.

[0006] Preferably, the tool holder body has two sets of threaded holes, and the tool bar is locked to the bottom of the tool holder body by a steel ball screw and a tool bar side fixing screw, each corresponding to a set of threaded holes.

[0007] Preferably, the tool holder body is provided with two sets of spindle keyways, and the tool holder body is provided with a tool holder mounting interface with an eccentricity of 0.2.

[0008] Preferably, the pull stud has a through hole inside, the handle body is hollow inside, the top of the handle has a central water outlet cooling hole, and the bottom of the handle has a water outlet in the same direction that communicates with the central water outlet cooling hole.

[0009] Preferably, an adjustment wrench insertion hole is provided at the top of the outer side of the tool holder.

[0010] Preferably, the blade mechanism includes a blade mounting slot, a precision boring blade, and a blade mounting screw. The blade mounting slot is located at the bottom of the outer side of the tool holder. The precision boring blade is provided on the blade mounting slot, and the precision boring blade is locked to the blade mounting slot by the blade mounting screw.

[0011] Preferably, the blade mounting groove has blade fixing sides on both sides.

[0012] Compared with the prior art, the beneficial effects of this utility model are: the new type of precision boring tool with small-range fine adjustment has a simple structure, the tool holder and the tool bar are connected and fixed through an eccentric precision hole, and the tool tip can be controlled to rotate at different angles during fine adjustment to achieve the effect of fine adjustment of the tool tip size; compared with other precision boring tool bars, this new type of small-range fine adjustment precision boring tool has a simple structure, lower design and processing costs, thereby reducing the procurement cost of tools, which is equivalent to reducing the processing cost of parts. Attached Figure Description

[0013] Figure 1 This is an exploded view of the present invention;

[0014] Figure 2 The three-dimensional representation of this utility model Figure 1 ;

[0015] Figure 3 This is a schematic diagram of the assembly structure of this utility model;

[0016] Figure 4 This is the front view of the present invention;

[0017] Figure 5 This is a schematic diagram illustrating the principle of how the eccentric rotation of the blade tip changes the outer diameter in this utility model.

[0018] Figure 6 This is a three-dimensional structural diagram of the tool holder of this utility model.

[0019] In the attached diagram:

[0020] 1. Rivet;

[0021] 2. Tool holder body; 21. Spindle keyway; 22. Threaded hole; 23. Outer diameter numerical scale;

[0022] 3. Tighten the ball bearing screw; 4. Secure the tool holder side screw;

[0023] 5. Tool holder; 51. Tool holder adjusting flange;

[0024] 6. Blade mechanism; 61. Blade mounting slot; 62. Precision boring blade; 63. Blade mounting screw. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0026] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0028] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0030] It should be noted that the precision boring tools widely used in the market are adjustable. To increase practicality and versatility, the adjustable machining diameter range of these boring tools is generally quite large, such as 10-50mm. To achieve this effect and ensure accuracy, the design of this adjustable tool holder is quite complex, requiring the use of precision screws and control mechanisms such as sliders. Therefore, the procurement cost of this tool holder is relatively high, thereby increasing the processing cost.

[0031] To address the aforementioned issues, this solution provides a novel precision boring tool. This application relates to a novel small-range fine-adjustment precision boring tool used in the machining industry for precision hole machining. The tool holder and tool shank are connected and fixed through an eccentric precision hole. During fine-adjustment, the tool tip is controlled by different rotation angles to achieve a tool tip size adjustment range of -20 microns to +20 microns. Compared to other precision boring tool shanks, this novel small-range fine-adjustment precision boring tool has a simple structure and lower design and manufacturing costs, thereby reducing tool procurement costs and, consequently, reducing part processing costs.

[0032] For details, please refer to Figures 1-6 , Figure 1 This is an exploded view of the present invention; Figure 2 The three-dimensional representation of this utility model Figure 1 ; Figure 3 This is a schematic diagram of the assembly structure of this utility model; Figure 4 This is the front view of the present invention; Figure 5 This is a schematic diagram illustrating the principle of how the eccentric rotation of the blade tip changes the outer diameter in this utility model. Figure 6 This is a three-dimensional structural diagram of the tool holder of this utility model.

[0033] This application provides a novel precision boring tool, including a pull stud 1, a tool holder body 2, a tool shank 5, a tool shank adjusting flange 51, and a cutting tool mechanism 6. The pull stud 1 has an external thread on its outer bottom. The top of the tool holder body 2 is connected to the pull stud 1, and the outer diameter numerical scale 23 is provided at the bottom edge of the outer side of the tool holder body 2. The tool shank 5 is locked to the bottom of the tool holder body 2. The tool shank adjusting flange 51 is located on the outer side of the tool shank 5, and the tool shank adjusting flange 51 has a mark corresponding to the tool tip orientation, and the mark matches the outer diameter numerical scale 23. The tool shank adjusting flange 51 is used to adjust the rotation angle of the tool shank. The cutting tool mechanism 6 is connected to the tool shank 5 and is used to install the precision boring tool.

[0034] It should be noted that the pull stud 1 is assembled on the tool holder body 2, so that the tool holder can be securely installed on the machine tool for use.

[0035] In this embodiment, the tool holder adjusting flange 51 is marked with a line corresponding to the direction of the tool tip, and the line matches the outer diameter value scale 23, corresponding to the accurate diameter value of the tool holder's fine-tuning rotation. The tool holder adjusting flange 51 drives the tool holder 5 and its blade mechanism 6 to fine-tune and control different rotation angles.

[0036] In this embodiment, the main body 2 of the tool holder has two sets of threaded holes 22. The tool bar 5 is locked to the bottom of the main body 2 of the tool holder by the tightening steel ball screw 3 and the tool bar side fixing screw 4, and each corresponds to a set of threaded holes.

[0037] It should be noted that the tool holder side fixing screw 4 is used to fix the precision boring tool holder 5 to the tool holder body 2; while the clamping steel ball screw 3 is used to prevent the tool holder 5 from slipping when fine-tuning during use.

[0038] In this embodiment, the tool holder body 2 is provided with two sets of spindle keyways 21, and the tool holder body 2 is provided with a tool holder mounting interface with an eccentricity of 0.2 mm.

[0039] It should be noted that the spindle keyway 21 is fixed in a corresponding position to the spindle on the machine tool. Eccentricity of 0.2 refers to a workpiece or component having an eccentricity error of 0.2 mm during machining or assembly, allowing the tool tip to be finely adjusted to control different rotation angles, achieving a tool tip size adjustment range of -20 microns to +20 microns.

[0040] In this embodiment, the pull stud 1 has a through hole inside, the handle body 2 is hollow inside, the top of the handle 5 has a central water outlet cooling hole, and the bottom of the handle 5 has a water outlet in the same direction that is connected to the central water outlet cooling hole.

[0041] It should be noted that, to facilitate the ejection of cutting coolant or air during tool use, coolant or air is injected through the through hole on the pull stud 1, flows through the internal cooling holes at the center of the tool holder body 2 and the tool shank 5, and then is ejected from the outlet in the same direction. See details below. Figure 1 , Figure 3 and Figure 4 .

[0042] In this embodiment, an adjustment wrench insertion hole is provided on the top of the outer side of the tool bar 5. The rotation of the tool bar 5 is adjusted by inserting a wrench into the wrench insertion hole on the tool bar 5.

[0043] In this embodiment, the blade mechanism 6 includes a blade mounting groove 61, a precision boring blade 62, and a blade mounting screw 63. The blade mounting groove 61 is located at the bottom outside the tool holder 5. The precision boring blade 62 is provided on the blade mounting groove 61, and the precision boring blade 62 is locked to the blade mounting groove 61 by the blade mounting screw 63. Blade fixing sides are provided on both sides of the blade mounting groove 61.

[0044] It should be noted that the precision boring insert 62 is locked onto the insert mounting slot 61 by the insert mounting screw 63 through a threaded locking method. The insert mounting slot 61 has insert fixing sides on both sides, which makes the insert precisely fixed during installation.

[0045] During installation, first rotate the pull pin 1 onto the tool holder body 2, then insert the tool shank 5 into the bottom of the tool holder body 2. Lock the position of the tool shank 5 with the tool shank side locking screw 4. After locking, the through hole at the pull pin 1, the hollow interior of the tool holder body 2, and the central water outlet and co-directional water outlet at the tool shank 5 form a channel, which can spray cutting coolant or air to cool the cutting position during use. After assembly, the tool shank adjusting flange 51 contacts the bottom of the tool holder body 2, and the insert mounting screw 63 passes through the precision boring insert 62 and installs it in the insert mounting slot 61.

[0046] During fine-tuning, the tool holder side fixing screw 4 is released from fixing the tool holder 5. Then, by observing the markings on the tool holder adjusting flange 51 and the outer diameter value scale 23, the rotation angle of the tool holder 5 and the blade mechanism 6 on it is fine-tuned. The steel ball screw 3 can prevent slippage when fine-tuning the tool holder 5. After fine-tuning, the tool holder side fixing screw 4 is re-fixed to the tool holder 5.

[0047] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A novel precision boring tool, characterized in that, include: A pull stud (1), wherein the bottom of the outer side of the pull stud (1) is provided with an external thread; The handle body (2) is connected to the top of the handle body (2) with a pull stud (1), and the bottom edge of the outer side of the handle body (2) is provided with an outer diameter numerical scale (23); The tool holder (5) is locked to the bottom of the tool handle body (2); The tool bar adjusting flange (51) is located on the outside of the tool bar (5). The tool bar adjusting flange (51) has a mark corresponding to the tool tip orientation, and the mark is matched with the outer diameter value scale (23). The tool bar adjusting flange (51) is used to adjust the rotation angle of the tool bar (5). The blade mechanism (6) is connected to the tool holder (5) and is used to mount the precision boring tool.

2. The novel precision boring tool according to claim 1, characterized in that: The main body (2) of the tool holder has two sets of threaded holes (22). The tool bar (5) is locked to the bottom of the main body (2) by a steel ball screw (3) and a tool bar side fixing screw (4), and each corresponds to a set of threaded holes.

3. The novel precision boring tool according to claim 1, characterized in that: The tool holder body (2) is provided with two sets of spindle keyways (21), and the tool holder body (2) is provided with a tool holder mounting interface with an eccentricity of 0.2 mm.

4. A novel precision boring tool according to claim 1, characterized in that: The pull stud (1) has a through hole inside, the handle body (2) is hollow inside, the top of the handle (5) has a central water outlet cooling hole, and the bottom of the handle (5) has a water outlet in the same direction that is connected to the central water outlet cooling hole.

5. A novel precision boring tool according to claim 1, characterized in that: An adjustment wrench insertion hole is provided on the top of the outer side of the knife bar (5).

6. A novel precision boring tool according to claim 1, characterized in that: The blade mechanism (6) includes a blade mounting groove (61), a precision boring blade (62), and a blade mounting screw (63). The blade mounting groove (61) is located at the bottom outside the tool holder (5). The precision boring blade (62) is provided on the blade mounting groove (61), and the precision boring blade (62) is locked to the blade mounting groove (61) by the blade mounting screw (63).

7. A novel precision boring tool according to claim 6, characterized in that: The blade mounting groove (61) has blade fixing sides on both sides.

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