Rough and fine integrated boring cutter

Abstract

The utility model relates to the technical field of machining tools, in particular to a rough and fine integrated boring tool which comprises a tool handle and a tool apron, an expansion assembly is arranged at the head end of the tool handle, the end, away from the head end of the tool handle, of the expansion assembly is connected with the tail end of the tool apron, and four containing grooves are jointly formed in the head end and the middle of the tool apron. When the tool bits are abraded and need to be replaced, a worker directly rotates the screws through an external wrench until the pressing plate and the tool apron are loosened, at the moment, all the tool bits can be directly replaced, and therefore compared with a traditional scheme, on the premise that the tool bits are convenient to replace, the tool bits can be replaced more conveniently, and the tool bits can be replaced more conveniently. And the tool bit can be firmly installed, the tool handle or the tool apron can be conveniently replaced due to the arrangement of the extension assembly, the distance between the tool apron and the tool handle can be adjusted, and therefore the tool can conveniently adapt to machining of holes with different depths, and the adaptability is better when the tool is used.

Description

Technical Field

[0001] The utility model relates to the technical field of machining tools, in particular to a roughing and finishing integrated boring tool. Background Art

[0002] A roughing and finishing integrated boring tool refers to a boring tool with a roughing tool head and a finishing tool head respectively provided at the front end and the middle part of the boring tool, so that the machine tool can complete rough machining and finishing in one clamping through this boring tool, thereby improving the machining efficiency.

[0003] And the existing Chinese patent with the application number: 202321967793.5 discloses a roughing and finishing integrated composite boring tool for deep hole boring, adopting the following technical scheme: including a fixing mechanism, which includes a tool holder. Cutting grooves are respectively opened on the front and rear sides of the top surface of the tool holder. Grooves are respectively opened on the right side of the front cutting groove and the left side of the rear cutting groove. A boring tool body is slidably connected to the side surface of the inner wall of the groove. A slot is fixedly connected to the side surface of the inner wall of the groove. An L-shaped block is rotatably connected to the side surface of the cutting groove. A through groove is opened inside the vertical block of the L-shaped block. A circular plate is slidably connected to the side surface of the inner wall of the through groove. Fixing rods are respectively fixedly connected to the opposite sides of the two circular plates. One end of the fixing rod passes through the inside of the boring tool body and is slidably connected to the side surface of the inner wall of the slot. L-shaped rods are respectively fixedly connected to the opposite sides of the two circular plates. The side surface of the vertical rod of the L-shaped rod is slidably connected to the side surface of the inner wall of the through groove. A first compression spring is fixedly sleeved on the side surface of the vertical rod of the L-shaped rod. One end of the first compression spring is fixedly connected to the side surface of the circular plate.

[0004] When the above technology is used, through the connection of the spring and each rod, it has the effect of quickly replacing the tool head to a certain extent. However, in the actual use process, simply clamping it with a spring, when the spring force is small, the tool head is not firmly clamped, and when the spring force is large, it is not convenient for personnel to pull. Thus, it is not convenient to replace the tool head in the actual use; therefore, in order to solve the above technical problems, we propose a roughing and finishing integrated boring tool. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the disadvantages existing in the prior art, and to propose a roughing and finishing integrated boring tool.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A roughing and finishing integrated boring tool includes a tool shank and a tool holder. An expansion component is provided at the head end of the tool shank, and one end of the expansion component away from the head end of the tool shank is connected to the tail end of the tool holder. Four accommodation grooves are jointly provided at the head end and the middle part of the tool holder. A rough machining tool bit is provided in the accommodation groove at the end of the head end of the tool holder, and a finishing tool bit is provided in the accommodation groove in the middle of the tool holder. Pressing plates are provided on the side surface of the tool holder corresponding to the rough machining tool bit and the finishing tool bit, and a screw is installed in the middle of the pressing plate. A threaded hole is provided in the middle of the tool holder corresponding to the screw.

[0008] Preferably, the expansion component includes an expansion cylinder, several groups of clamping frames and a top spring. The expansion cylinders are connected end to end through extension parts between each other, between the expansion cylinder and the tool shank and the tool holder. Each group of clamping frames is respectively installed inside the tool shank and the expansion cylinder. The top spring is arranged inside each group of clamping frames. The head end of each group of clamping frames extends to the outside of the extension part. The expansion cylinder and the tool holder are provided with matching clamping grooves at one end of the clamping frame located outside the extension part. The tool shank and the expansion cylinder are provided with force application grooves at the tail end of the clamping frame.

[0009] Preferably, a protective cylinder is provided on the outer ring surface of the expansion cylinder through threads. The outer ring surface of the protective cylinder is provided with anti-slip lines and covers the outside of the tail end of the clamping frame.

[0010] Preferably, a limiting hole is provided on the inner side of each group of clamping frames. Both ends of the top spring are located in the limiting hole. Guide rods are provided inside the tool shank and the expansion cylinder corresponding to the clamping frames, and the guide rods penetrate through the frame body of the clamping frames.

[0011] Preferably, guide holes are provided on both sides of the middle part of the pressing plate. Guide columns are provided on the side surface of the tool holder corresponding to the guide holes.

[0012] Preferably, positioning holes are provided on the tool bodies of the rough machining tool bit and the finishing tool bit. Positioning columns are provided on the side surfaces of the tool holder and the pressing plate corresponding to the positioning holes.

[0013] Preferably, the diameter of the tool holder is larger than that of the tool shank. The cutting edges of the rough machining tool bit and the finishing tool bit are both located outside the tool holder.

[0014] The beneficial effects of a roughing and finishing integrated boring tool proposed by the present utility model are as follows:

[0015] 1: In the present utility model, since the pressing plate is installed on the tool holder by screws, and the four corners of the pressing plate press and fix the four tool tips. When the tool tips are worn and need to be replaced, the operator can directly rotate the screws with an external wrench until the pressing plate is loose from the tool holder. At this time, the tool tips can be directly replaced. Therefore, compared with the traditional solution, the present solution is more convenient for replacing the tool tips and has a more secure installation effect on the tool tips. The setting of the expansion component enables the convenient replacement of the tool holder or the tool seat when they are damaged, thereby reducing costs. The setting of several expansion cylinders enables the adjustment of the distance between the tool seat and the tool holder, that is, the overall length of the milling cutter can be adjusted, so as to facilitate the adaptation to hole machining of different depths, making the present solution more adaptable when in use.

[0016] 2: The setting of the expansion component in the present utility model facilitates the adjustment of the boring tool length and its modular replacement. The setting of the top spring and the clamping frame also makes it more convenient for the operator to replace or disassemble the expansion cylinder. The setting of the protection cylinder facilitates the prevention of external debris and other sundries from accidentally falling into the expansion cylinder during the use of the milling cutter, thus interfering with the movement of the clamping frame. The setting of the guide hole and the guide post facilitates the improvement of the stability of the pressing plate during movement, so that the pressing plate can more stably clamp and fix each tool tip. The setting of the positioning post further improves the clamping and fixing effect on the tool tip, making the tool tip more stable with the tool seat during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a perspective view of a roughing and finishing integrated boring tool proposed by the present utility model;

[0018] Figure 2 is another perspective view of a roughing and finishing integrated boring tool proposed by the present utility model;

[0019] Figure 3 is an exploded view of a roughing and finishing integrated boring tool proposed by the present utility model;

[0020] Figure 4 is an internal view of the expansion cylinder of a roughing and finishing integrated boring tool proposed by the present utility model;

[0021] Figure 5 is a view of the tool seat of a roughing and finishing integrated boring tool proposed by the present utility model;

[0022] Figure 6 is a schematic diagram of the cooperation between the tool seat and the pressing plate of a roughing and finishing integrated boring tool proposed by the present utility model.

[0023] In the figure: 1, tool shank; 2, tool holder; 3, rough machining tool bit; 4, finish machining tool bit; 5, pressing plate; 6, screw; 7, expansion cylinder; 8, clamping frame; 9, top spring; 10, protection cylinder; 11, guide rod; 12, guide post; 13, positioning post; Specific implementation mode

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0025] Embodiment 1

[0026] Refer to Figure 1-6 , a rough and finish integrated boring tool, including a tool shank 1 and a tool holder 2. An expansion assembly is provided at the head end of the tool shank 1. One end of the expansion assembly away from the head end of the tool shank 1 is connected to the tail end of the tool holder 2. Four receiving grooves are jointly provided at the head end and the middle part of the tool holder 2. A rough machining tool bit 3 is provided in the receiving groove at the end of the head end of the tool holder 2, and a finish machining tool bit 4 is provided in the receiving groove at the middle part of the tool holder 2. A pressing plate 5 that matches the rough machining tool bit 3 and the finish machining tool bit 4 is provided on the side surface of the tool holder 2. A screw 6 is installed in the middle of the pressing plate 5, and a threaded hole that matches the screw 6 is provided at the middle part of the tool holder 2.

[0027] Embodiment 2

[0028] Refer to Figure 1-6 , under the condition that other parts are the same as those in Embodiment 1, the difference between this embodiment and Embodiment 1 lies in:

[0029] The expansion component includes an expansion cylinder 7, several groups of clamping frames 8, and a top spring 9. The expansion cylinders 7 are connected end to end through extension parts with each other, and also between the expansion cylinder 7 and the tool holder 1 and the tool rest 2. Each group of clamping frames 8 is respectively installed inside the tool holder 1 and the expansion cylinder 7. The top spring 9 is arranged inside each group of clamping frames 8. The head end of each group of clamping frames 8 extends to the outside of the extension part. The expansion cylinder 7 and the tool rest 2 are provided with matching clamping grooves at one end of the clamping frame 8 located outside the extension part. The tool holder 1 and the expansion cylinder 7 are provided with force application grooves at the tail end of the clamping frame 8. The outer ring surface of the expansion cylinder 7 is provided with a protective cylinder 10 through threads. The outer ring surface of the protective cylinder 10 is provided with anti-slip lines and covers the outside of the tail end of the clamping frame 8. A limiting hole is provided inside each group of clamping frames 8. Both ends of the top spring 9 are located in the limiting holes. Guide rods 11 are provided inside the tool holder 1 and the expansion cylinder 7 corresponding to the clamping frame 8. The guide rods 11 penetrate through the frame body of the clamping frame 8. With the setting of the expansion component, the tool rest 2 and the tool holder 1 can be disassembled. Thus, when the tool holder 1 or the tool rest 2 is damaged, it can be conveniently and specifically replaced, thereby reducing costs. And through the setting of several expansion cylinders 7, the distance between the tool rest 2 and the tool holder 1 can be adjusted, that is, the overall length of the milling cutter can be adjusted, so as to facilitate adapting to hole machining with different depths, which makes the present solution more adaptable during use. At the same time, the setting of the top spring 9 and the clamping frame 8 also makes it more convenient for personnel to replace or disassemble the expansion cylinder 7. And the setting of the protective cylinder 10 facilitates preventing external debris and other sundries from accidentally falling into the inside of the expansion cylinder 7 during the use of the milling cutter, so as to avoid the phenomenon of interfering with the movement of the clamping frame 8.

[0030] Guide holes are provided on both sides of the middle part of the pressing plate 5. The tool rest 2 is provided with matching guide posts 12 corresponding to the guide holes on the side. The setting of the guide holes and the guide posts 12 facilitates improving the stability of the pressing plate 5 during movement, so that the pressing plate 5 can more stably clamp and fix each cutting head; positioning holes are provided on the tool bodies of the rough machining cutting head 3 and the finish machining cutting head 4. The tool rest 2 and the pressing plate 5 are provided with matching positioning posts 13 corresponding to the positioning holes on the side. The setting of the positioning posts 13 further improves the clamping and fixing effect on the cutting head, so that the cutting head is more stable with the tool rest 2 during use; the diameter of the tool rest 2 is larger than that of the tool holder 1. The cutting edges of the rough machining cutting head 3 and the finish machining cutting head 4 are both located outside the tool rest 2. This move facilitates the boring tool to machine the external hole.

[0031] Principle of use and advantages: During the use of the present utility model, the milling cutter is installed through the tool holder 1, that is, the tool holder 1 is normally clamped with the external machine tool. Subsequently, the external machine tool can drive the boring tool to move, so as to first rough machine the workpiece through the rough machining cutting head 3 at the end of the tool rest 2, and then finish machine it through the finish machining cutting head 4 in the middle of the tool rest 2. Thus, through the milling cutter proposed by this solution, two processes of rough machining and finish machining can be completed with one clamping, thereby effectively improving the production efficiency.

[0032] At the same time, in the above process, since the pressing plate 5 is installed with the tool holder 2 by means of the screws 6, and the four corners of the pressing plate 5 press and fix the four cutter heads, when the cutter heads are worn and need to be replaced, the personnel directly rotate the screws 6 with an external wrench until the pressing plate 5 and the tool holder 2 are loosened. At this time, the cutter heads can be directly taken out from between the pressing plate 5 and the tool holder 2, and then the new cutter heads can be inserted between the two, and the pressing plate 5 is moved closer to the tool holder 2 by rotating the screws 6 until the four corners of the pressing plate 5 fix the cutter heads.

[0033] It should be further explained that the setting of the expansion component allows the tool holder 2 and the tool handle 1 to be disassembled, so that when the tool handle 1 or the tool holder 2 is damaged, it can be conveniently replaced in a targeted manner, thereby reducing costs. Moreover, by setting a number of expansion cylinders 7, the distance between the tool holder 2 and the tool handle 1 can be adjusted, that is, the overall length of the milling cutter can be adjusted, so as to facilitate the processing of holes of different depths, that is, the adaptability of the present solution is better when used. At the same time, the setting of the top spring 9 and the clamping frame 8 also makes it more convenient for personnel to replace or remove the expansion cylinder 7. The setting of the protective cylinder 10 is convenient to prevent external debris and other sundries from accidentally falling into the expansion cylinder 7 during the use of the milling cutter, thereby interfering with the movement of the clamping frame 8; the setting of the guide hole and the guide column 12 is convenient to improve the stability of the pressing plate 5 when it moves, so that the pressing plate 5 can clamp and fix each cutter head more stably; the setting of the positioning column 13 further improves the clamping and fixing effect of the cutter head, so that the cutter head is more stable with the tool holder 2 when in use.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A roughing and finishing integrated boring tool, comprising a tool handle (1) and a tool seat (2), characterized in that: The front end of the tool holder (1) is provided with an extension component, and the end of the extension component away from the front end of the tool holder (1) is connected to the rear end of the tool holder (2). The front end and the middle part of the tool holder (2) are provided with four receiving grooves. A roughing cutter head (3) is provided in the receiving groove at the front end of the tool holder (2), and a fine processing cutter head (4) is provided in the receiving groove at the middle part of the tool holder (2). A matching pressing plate (5) is provided on the side of the tool holder (2) corresponding to the roughing cutter head (3) and the fine processing cutter head (4). A screw (6) is installed in the middle part of the pressing plate (5), and a matching threaded hole is provided in the middle part of the tool holder (2) corresponding to the screw (6).

2. A roughing and finishing integrated boring tool according to claim 1, characterized in that: The expansion assembly comprises an expansion tube (7), a plurality of groups of clamping frames (8) and a top spring (9). The expansion tubes (7) and the expansion tubes (7) and the knife handle (1) and the knife seat (2) are all connected end to end through an extension portion. Each group of clamping frames (8) is installed inside the knife handle (1) and the expansion tube (7) respectively. The top spring (9) is arranged inside each group of clamping frames (8). The head end of each group of clamping frames (8) extends to the outside of the extension portion. The expansion tube (7) and the knife seat (2) are provided with a matching clamping groove at one end of the clamping frame (8) located outside the extension portion, and the knife handle (1) and the expansion tube (7) are provided with a force application groove at the tail end of the clamping frame (8).

3. A roughing and finishing integrated boring tool according to claim 2, characterized in that: The outer ring surface of the expansion tube (7) is provided with a protective tube (10) through a thread, and the outer ring surface of the protective tube (10) is provided with anti-slip grooves and is covered on the outside of the rear end of the clamping frame (8).

4. The roughing and finishing integrated boring tool according to claim 2, characterized in that: A limiting hole is provided on the inner side of each group of the clamping frames (8), and the two ends of the top spring (9) are located in the limiting holes. A guide rod (11) is provided inside the knife handle (1) and the expansion tube (7) corresponding to the clamping frame (8), and the guide rod (11) passes through the frame body of the clamping frame (8).

5. The roughing and finishing integrated boring tool according to claim 1, characterized in that: Guide holes are provided on both sides of the middle of the pressing plate (5), and matching guide columns (12) are provided on the side surfaces of the knife seat (2) corresponding to the guide holes.

6. The roughing and finishing integrated boring tool according to claim 1, characterized in that: Positioning holes are provided on the tool bodies of the rough machining tool head (3) and the fine machining tool head (4), and matching positioning columns (13) are provided on the sides of the tool holder (2) and the pressing plate (5) corresponding to the positioning holes.

7. The roughing and finishing integrated boring tool according to claim 1, characterized in that: The diameter of the tool seat (2) is greater than that of the tool handle (1), and the cutting edges of the rough machining tool head (3) and the finishing tool head (4) are both located outside the tool seat (2).

Images