A boring tool mounting structure

Abstract

The utility model discloses a kind of inner hole turning tool mounting structures, including tool bar and tool, the front end of the tool bar is provided with turning tool mounting part, the inside of the turning tool mounting part is provided with tool mounting groove for installing tool, the front and back of the tool mounting groove are respectively provided with front blocking part and rear blocking part;Tool is inserted tool mounting groove from the left end bottom of tool mounting groove obliquely, is fixed by fixed screw;The front end of tool and the rear side of front blocking part abut, the rear end of tool and the front end of rear blocking part abut, the front and back of the tool mounting groove are respectively provided with front blocking part and rear blocking part;Fixed screw is further fixedly connected in turning tool mounting part;The front and rear blocking part of the utility model directly bear cutting main stress, greatly reduce the shearing load of fixed screw, avoid screw burst, improve reliability tool and mounting groove adopt triangular matching structure, effectively inhibit tool rotation caused by feeding, guarantee processing stability and precision.

Description

Technical Field

[0001] This utility model relates to the field of cutting tools, specifically an internal turning tool mounting structure. Background Technology

[0002] Non-standard internal turning tools refer to internal turning tools with non-standard dimensions, shapes, or functions that are customized according to the specific requirements of the internal hole of the workpiece being machined. These tools are used in mechanical manufacturing for cutting internal holes and have high flexibility and adaptability, and can meet special machining needs that cannot be completed by standard tools.

[0003] For example, our company's earlier patent application with authorization announcement number CN223011925U disclosed a non-standard internal turning tool, including a cutting head and a cutting blade body. The cutting blade body is welded to the outer end of the cutting blade body, and the cutting blade body is inclined. It also includes a tool shank, the left end of which is slotted and rotatably mounted with a drive shaft. The outer end of the drive shaft is connected to the cutting blade body, and the rear end of the drive shaft is connected to a drive mechanism.

[0004] The aforementioned patent features a cutting angle of 45° that perfectly aligns with the inner hole angle of the workpiece, allowing for proper tool clamping without the need for manual angle adjustment, thus improving practicality. It also includes a first and second clearance groove, whose positions help avoid workpiece interference during machining, enhancing the cutting efficiency of the tool body in the later stages. A cutting head is also included, allowing for normal cutting operations. However, the patent has a drawback: in existing technologies, the tool is mounted on a tool holder. During cutting, the workpiece rotates, and the force in the workpiece's rotation direction is applied to the tool. This force is primarily borne by a single drive shaft, which can easily cause the drive shaft to break. Furthermore, the tool itself is small and cannot easily accommodate multiple drive shafts.

[0005] Therefore, it is necessary to improve such a structure to overcome the above-mentioned defects. Utility Model Content

[0006] The purpose of this utility model is to provide an internal turning tool mounting structure to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: An internal turning tool mounting structure includes a tool shank and a cutting tool. The tool shank has a tool mounting section at its front end, and the tool mounting section has a tool mounting groove for mounting the cutting tool. A front stop and a rear stop are respectively provided at the front and rear of the tool mounting groove. The cutting tool is inserted obliquely upwards into the tool mounting groove from its left bottom end and is then fixed by a fixing screw. The front end of the cutting tool abuts against the rear side of the front stop, and the rear end of the cutting tool abuts against the front end of the rear stop. A fixing screw is also fixedly connected inside the tool mounting section.

[0008] Furthermore, the rear end of the rear blocking part is provided with a countersunk hole that penetrates the rear blocking part; the rear end of the front blocking part is provided with a threaded hole; the center of the cutting tool is provided with a through hole for fixing; the fixing screw passes through the countersunk hole and the through hole in sequence and is then threadedly connected to the threaded hole.

[0009] Furthermore, the bottom rear end of the cutting tool is provided with a cutting head mounting part for mounting the cutting head, and the cutting head is fixedly welded to the cutting head mounting part.

[0010] Furthermore, the cutting angle formed by the tool and the tool holder is 45°.

[0011] Furthermore, the cutting head is made of high-speed steel.

[0012] Furthermore, the top of the tool mounting groove is triangular, and the top of the tool is also triangular. The top of the tool fits into the top of the tool mounting groove, thereby preventing the tool from rotating around the fixing screw as the axis.

[0013] Compared with the prior art, the beneficial effects of this utility model are: The front and rear blocking parts directly bear the main cutting stress, which greatly reduces the shear load on the fixing screw, prevents the screw from breaking, and improves reliability.

[0014] The tool and mounting slot adopt a triangular matching structure, which effectively suppresses tool rotation caused by infeed, ensuring machining stability and accuracy.

[0015] The angled insertion installation, combined with the axial clamping of the screw, ensures accurate tool positioning and strong vibration resistance.

[0016] The overall layout is reasonable, suitable for narrow spaces in internal turning, and has sufficient rigidity. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of an internal turning tool mounting structure.

[0018] Figure 2 This is a front view of an internal turning tool mounting structure.

[0019] Figure 3 This is a side view of an internal turning tool mounting structure.

[0020] Figure 4 This is a top view of an internal turning tool mounting structure.

[0021] Figure 5 This is a schematic diagram of the tool mounting section in an internal turning tool mounting structure.

[0022] Figure 6 This is a schematic diagram of the tool structure in an internal turning tool mounting structure. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0024] Please see Figure 1-6 An internal turning tool mounting structure includes a tool holder 1, a turning tool mounting part 2 at the front end of the tool holder 1, a tool mounting groove 3 for mounting a tool 4 inside the tool mounting part 2, a front blocking part 301 and a rear blocking part 302 respectively provided at the front and rear of the tool mounting groove 3; the tool 4 is inserted obliquely upward from the bottom left end of the tool mounting groove 3 and fixed by a fixing screw 6; The front end of the cutter 4 abuts against the rear side of the front stop 301, and the rear end of the cutter 4 abuts against the front end of the rear stop 302. In this design, the tool mounting groove 3 is provided with a front blocking part 301 and a rear blocking part 302 at the front and rear, respectively, so that when the tool 4 is turning the workpiece, it can resist the force on the tool in the front and rear in the tangential direction of the workpiece rotation. This makes the main function of the fixing screw 6 to prevent the tool 4 from falling out of the tool mounting groove 3. The force on the fixing screw 6 is reduced, making the fixing screw less likely to break. The bottom rear end of the cutting tool 4 is provided with a cutting head mounting part 401 for mounting the cutting head 5, and the cutting head 5 is fixedly welded to the cutting head mounting part 401. In this solution, the rear end of the rear blocking part 302 is provided with a countersunk hole 304 that penetrates the rear blocking part 302; the rear end of the front blocking part 301 is provided with a threaded hole 305; the center of the cutter 4 is provided with a through hole 402 for the fixing 6 to pass through; the fixing screw 6 passes through the countersunk hole 304 and the through hole 402 in sequence and is then threadedly connected to the threaded hole 305. The cutting angle formed by the tool 4 and the tool holder 4 is 45°; The cutting head 5 is made of high-speed steel.

[0025] It is also worth noting that the top of the tool mounting groove 3 is triangular, and the top of the tool 4 is also triangular. The top of the tool 4 fits into the top of the tool mounting groove 3, thereby preventing the tool 4 from rotating around the fixing screw 6 as the axis. When using this utility model, the left end of the tool 4 is inserted into the inner hole of the workpiece. The workpiece rotates, and the tool 4 moves outward. The cutting head 5 of the tool 4 performs cutting operations on the inner hole of the workpiece.

[0026] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, terms such as "set" and "connect" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. An internal turning tool mounting structure, comprising a tool holder and a cutting tool, characterized in that, The tool holder has a tool mounting section at its front end, and the tool mounting section has a tool mounting groove for mounting the tool. A front blocking part and a rear blocking part are respectively provided at the front and rear of the tool mounting groove. The tool is inserted into the tool mounting groove obliquely upward from the bottom left end and is fixed by a fixing screw. The front end of the tool abuts against the rear side of the front blocking part, and the rear end of the tool abuts against the front end of the rear blocking part. The tool mounting groove has a front blocking part and a rear blocking part respectively. A fixing screw is also fixedly connected inside the tool mounting section.

2. The internal turning tool mounting structure according to claim 1, characterized in that, The rear end of the rear blocking part has a countersunk hole that passes through the rear blocking part; the rear end of the front blocking part has a threaded hole; the center of the cutting tool has a through hole for fixing; the fixing screw passes through the countersunk hole and the through hole in sequence and then is threadedly connected to the threaded hole.

3. The internal turning tool mounting structure according to claim 1, characterized in that, The bottom rear end of the cutting tool is provided with a cutting head mounting part for mounting the cutting head, and the cutting head is fixedly welded to the cutting head mounting part.

4. The internal turning tool mounting structure according to claim 1, characterized in that, The cutting angle formed by the cutting tool and the tool holder is 45°.

5. The internal turning tool mounting structure according to claim 3, characterized in that, The cutting head is made of high-speed steel.

6. The internal turning tool mounting structure according to claim 1, characterized in that, The top of the tool mounting slot is triangular, and the top of the tool is also triangular. The top of the tool fits into the top of the tool mounting slot, thereby preventing the tool from rotating around the fixing screw.

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