A reamer with adjustable pilot

Abstract

The utility model relates to tool technical field discloses a reaming tool with adjustable guide strip, including reaming tool bar, reaming tool head of detachable connection and guide strip subassembly of detachable connection, reaming tool bar includes: tool bar main part, reaming tool head includes: the tool head of detachable installation in the bottom of tool bar main part, the insert connected with tool bar main part fixed in the top of tool head and a plurality of sealing rings fixed in the four around of insert, guide strip subassembly includes: the guide strip of setting in the inside of tool head, a plurality of adjusting screw holes are opened in the side of guide strip and the adjusting screw of screwing in the inside of one adjusting screw hole, the utility model discloses through setting guide strip subassembly, can adjust the exposed length of guide strip through adjusting screw, changes the effective guide diameter of whole tool when processing, even if the wear of guide strip bottom, also can carry out position adjustment to guide strip, convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of cutting tool technology, specifically a hole-reaming tool with an adjustable guide bar. Background Technology

[0002] A reamer is a metal cutting tool used to enlarge existing holes. It is mainly used in machining to finish or correct holes in pre-drilled holes or holes in castings and forgings. It removes excess material from the hole wall through cutting action, so that the hole diameter reaches the design size and accuracy.

[0003] Commonly used reamers on the market are mainly divided into two types: integral reamers and modular reamers. While integral reamers have good structural rigidity, once the guide bar or insert wears out, or if holes of different diameters need to be machined, the entire tool must be scrapped or returned to the manufacturer for repair, resulting in high operating costs and poor flexibility. Modular reamers, by separating the tool holder from the tool head, solve the problem of tool head replacement to some extent, reducing long-term operating costs for users.

[0004] However, the length of the guide section of existing modular reamers is mostly fixed and not adjustable, but the guide bar will gradually wear down during the machining process, making it unusable. Utility Model Content

[0005] Given that the length of the guide section of existing modular reaming tools is mostly fixed and not adjustable, but the guide bar will gradually wear down during the machining process and become unusable.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A reaming tool with an adjustable guide bar includes a reaming bar shank; a detachably connected reaming head; and a detachably connected guide bar assembly. The reaming tool bar includes: a tool bar body; The reaming head includes: a detachable reaming head mounted on the bottom of the reaming bar body; an insert fixed to the top of the reaming head and connected to the reaming bar body; and multiple sealing rings fixed around the insert. The guide bar assembly includes: a guide bar disposed inside the cutter head; a plurality of adjusting screw holes formed on the side of the guide bar; and an adjusting screw threaded into one of the adjusting screw holes.

[0007] As a further embodiment of this utility model, the guide bar assembly further includes: a fastening surface disposed on the side of the guide bar; the adjusting screw holes are evenly distributed at equal intervals along the surface of the fastening surface.

[0008] As a further improvement of this utility model, the guide bar assembly further includes a guide key fixed to the other side of the guide bar, and an installation groove is provided at the connection between the guide key and the cutter head.

[0009] As a further improvement of this utility model: a limiting groove adapted to the size of the guide key is provided at the connection between the mounting groove and the guide key, and the length of the limiting groove is greater than the length of the guide key.

[0010] As a further improvement of this utility model: the axis of the guide bar coincides with the axis of the cutter head, and the bottom of the guide bar penetrates the bottom of the cutter head.

[0011] As a further embodiment of this utility model, the reaming head further includes: a reaming groove formed around the bottom of the head; a reaming blade installed inside the reaming groove; and a blade screw disposed inside the reaming blade.

[0012] As a further embodiment of this utility model, the reaming tool bar also includes: a connector fixed to the top of the tool bar body, the insert being inserted into the bottom of the tool bar body, and the connector being a hexagonal connector.

[0013] As a further improvement of this utility model: locking components are installed on both the left and right sides of the blade holder body and the blade head, and locking screws are inserted inside the locking components.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model, by setting a guide bar assembly, allows the exposed length of the guide bar to be adjusted by adjusting the screw, thereby changing the effective guiding diameter of the entire tool during processing. Even if the bottom of the guide bar is worn, the position of the guide bar can still be adjusted, making it convenient to use.

[0015] 2. This utility model features a detachable connection between the reaming cutter bar, reaming cutter head, and guide bar assembly. When a part is worn or damaged, it is not necessary to replace the entire tool; only the damaged module needs to be replaced or adjusted, thus reducing maintenance costs and time and improving production efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a reaming tool with an adjustable guide bar; Figure 2 This is a schematic diagram of a hole-reaming tool with an adjustable guide bar from another perspective. Figure 3 This is a schematic diagram of a half-section structure of a hole-reaming tool with an adjustable guide bar; Figure 4 This is a schematic diagram of the structure of a reaming tool head with an adjustable guide bar; Figure 5 This is a schematic diagram of the structure of a guide bar for a reaming tool with an adjustable guide bar.

[0017] In the diagram: 1. Reamer bar; 101. Bar body; 102. Connector; 2. Reamer head; 201. Head; 202. Reamer groove; 203. Mounting groove; 204. Reamer blade; 205. Blade screw; 206. Insert; 207. Sealing ring; 3. Guide bar assembly; 301. Guide bar; 302. Adjusting screw; 303. Adjusting screw hole; 304. Fastening surface; 305. Guide key; 4. Locking component; 5. Locking screw. Detailed Implementation

[0018] To make the above-mentioned objectives, features and advantages of this utility model more readily understood, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0019] Example 1: Please refer to Figures 1-4 This is the first embodiment of the present invention. This embodiment provides a reaming tool with an adjustable guide bar, including a reaming tool bar 1; a detachably connected reaming tool head 2; and a detachably connected guide bar assembly 3. The reaming tool holder 1 includes: a tool holder body 101; The reaming head 2 includes: a detachable reaming head 201 mounted on the bottom of the tool holder body 101; an insert 206 fixed to the top of the reaming head 201 and connected to the tool holder body 101; and a plurality of sealing rings 207 fixed around the insert 206. The plurality of sealing rings 207 on the insert 206 form a sealing barrier at the connection between the tool holder body 101 and the reaming head 201, which can effectively prevent cutting fluid and metal chips from entering the connection, ensuring reliable connection and extending component life. The guide bar assembly 3 includes: a guide bar 301 disposed inside the cutter head 201; a plurality of adjusting screw holes 303 opened on the side of the guide bar 301; and an adjusting screw 302 threaded into one of the adjusting screw holes 303.

[0020] Specifically, the guide bar assembly 3 also includes: a fastening surface 304 disposed on the side of the guide bar 301; and adjusting screw holes 303 evenly distributed at equal intervals along the surface of the fastening surface 304.

[0021] Furthermore, the adjusting screw hole 303 is configured in multiple ways, which can be used in conjunction with the adjusting screw 302 to adjust the exposed length of the guide bar 301.

[0022] Specifically, the guide bar assembly 3 also includes a guide key 305 fixed to the other side of the guide bar 301, and a mounting groove 203 is provided at the connection between the guide key 305 and the cutter head 201.

[0023] Furthermore, the guide key 305 is used to guide the movement direction of the guide bar 301.

[0024] Specifically, a limiting groove adapted to the size of the guide key 305 is provided at the connection between the mounting groove 203 and the guide key 305, and the length of the limiting groove is greater than the length of the guide key 305.

[0025] Furthermore, the limiting groove is used to limit the guide key 305 to prevent the guide bar 301 from coming out of the cutter head 201 from the bottom.

[0026] Specifically, the axis of the guide bar 301 coincides with the axis of the cutter head 201, and the bottom of the guide bar 301 extends through the bottom of the cutter head 201.

[0027] Furthermore, the guide key 305 prevents the guide bar 301 from rotating or shifting during the cutting process, ensuring that the adjusted dimensions remain unchanged during machining, thereby further guaranteeing the stability and repeatability of the machining process.

[0028] In use, since the adjusting screw holes 303 are equidistantly distributed on the fastening surface 304, different screw holes can be selected to install the adjusting screw 302, thereby achieving coarse adjustment of the radial position of the guide bar 301. By precisely screwing in or out the adjusting screw 302, the height of the guide bar 301 extending out of the outer surface of the cutter head 201 can be finely adjusted, thus adapting to different hole diameter requirements. The multiple sealing rings 207 on the insert 206 form a sealing barrier at the connection between the cutter shank and the cutter head, which can effectively prevent cutting fluid and metal chips from entering the connection, ensuring reliable connection and extending component life. The cooperation between the guide key 305 and the mounting groove 203 not only facilitates installation, but more importantly, prevents the guide bar 301 from rotating or circumferentially displacing under cutting force, ensuring machining accuracy and stability.

[0029] In summary, by setting the guide bar assembly 3, the exposed length of the guide bar 301 can be adjusted by adjusting the screw 302, thereby changing the effective guide diameter of the entire tool during machining. Even if the bottom of the guide bar 301 is worn, the position of the guide bar 301 can still be adjusted, making it convenient to use.

[0030] Example 2: Please refer to Figures 3-5 This is the second embodiment of the present utility model.

[0031] Specifically, the reaming head 2 also includes: a reaming groove 202 formed around the bottom of the head 201; a reaming blade 204 installed inside the reaming groove 202; and a blade screw 205 disposed inside the reaming blade 204.

[0032] Furthermore, the reaming insert 204 is mounted inside the reaming slot 202 by insert screws 205, allowing the worn reaming insert 204 to be disassembled.

[0033] Specifically, the reaming tool 1 also includes: a connector 102 fixed to the top of the tool shank body 101, an insert 206 inserted into the bottom of the tool shank body 101, and the connector 102 is a hexagonal connector.

[0034] Furthermore, the connector 102 facilitates the installation of the tool holder body 101. The tool holder body 101 and the connector 102 are integrally formed, and the tool holder body 101 has a through hole that matches the insert 206.

[0035] Specifically, locking components 4 are installed on both the left and right sides of the tool holder body 101 and the tool head 201, and locking screws 5 are inserted inside the locking components 4.

[0036] Furthermore, the locking element 4 is embedded in the side of the connection between the tool holder body 101 and the tool head 201, and the locking screw 5 is used to connect the tool holder body 101 and the tool head 201, making it convenient to disassemble and replace the tool head 201.

[0037] In use, the guide bar assembly 3 is pre-positioned by embedding itself into the mounting groove 203 of the cutter head 201 via the guide key 305 on its side. The reaming cutter head 2 is inserted into the cutter body 101 at the bottom of the reaming cutter bar 1 via the insert 206 at its top, and the two are firmly fixed together by the locking member 4 and the locking screw 5 to form an integral cutter. During the reaming operation, the machine tool drive connector 102 drives the entire cutter to rotate and feed. The bottom of the guide bar 301 first extends into the pre-drilled bottom hole on the workpiece. Since its axis coincides with the axis of the cutter head 201, it can provide stable and precise radial support and guidance for the cutter, ensuring the coaxiality and straightness of the reaming process. Subsequently, the reaming insert 204 fixed in the reaming cutter groove 202 at the bottom of the cutter head 201 cuts the hole wall to complete the reaming.

[0038] In summary, by using a detachable connection between the reamer bar 1, the reamer head 2, and the guide bar assembly 3, when a part is worn or damaged, it is not necessary to replace the entire tool; only the damaged module needs to be replaced or adjusted, thus reducing maintenance costs and time and improving production efficiency.

[0039] It should be understood that numerous specific implementation decisions can be made during the development of any actual implementation method, and in any engineering or design project. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, the development effort will be a routine task in design, manufacturing, and production without requiring extensive experimentation.

[0040] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A reaming tool with an adjustable guide bar, characterized in that, include: Reamer bar (1); Reamer head (2) with detachable connection; And a detachable guide bar assembly (3); The reaming tool bar (1) includes: tool bar body (101); The reaming head (2) includes: a head (201) detachably mounted on the bottom of the tool bar body (101); an insert (206) fixed to the top of the head (201) and connected to the tool bar body (101); and a plurality of sealing rings (207) fixed around the insert (206). The guide bar assembly (3) includes: a guide bar (301) disposed inside the cutter head (201); a plurality of adjusting screw holes (303) opened on the side of the guide bar (301); and an adjusting screw (302) threaded into one of the adjusting screw holes (303).

2. A reaming tool with an adjustable guide bar according to claim 1, characterized in that: The guide bar assembly (3) further includes: a fastening surface (304) disposed on the side of the guide bar (301); the adjusting screw holes (303) are evenly distributed at equal intervals along the surface of the fastening surface (304).

3. A reaming tool with an adjustable guide bar according to claim 2, characterized in that: The guide bar assembly (3) further includes a guide key (305) fixed to the other side of the guide bar (301), and an installation groove (203) is provided at the connection between the guide key (305) and the cutter head (201).

4. A reaming tool with an adjustable guide bar according to claim 3, characterized in that: The connection between the mounting groove (203) and the guide key (305) is provided with a limiting groove that is adapted to the size of the guide key (305), and the length of the limiting groove is greater than the length of the guide key (305).

5. A reaming tool with an adjustable guide bar according to claim 4, characterized in that: The axis of the guide bar (301) coincides with the axis of the cutter head (201), and the bottom of the guide bar (301) penetrates the bottom of the cutter head (201).

6. A reaming tool with an adjustable guide bar according to claim 5, characterized in that: The reaming head (2) further includes: a reaming groove (202) formed around the bottom of the head (201); a reaming blade (204) installed inside the reaming groove (202); and a blade screw (205) disposed inside the reaming blade (204).

7. A reaming tool with an adjustable guide bar according to claim 6, characterized in that: The enlarging tool bar (1) further includes: a connector (102) fixed to the top of the tool bar body (101), the insert (206) being inserted into the bottom of the tool bar body (101), and the connector (102) being a hexagonal connector.

8. A reaming tool with an adjustable guide bar according to claim 7, characterized in that: Locking components (4) are installed on both the left and right sides of the main body (101) and the cutting head (201), and locking screws (5) are inserted inside the locking components (4).

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