Fine boring cutter for numerical control machine tool

Abstract

The utility model discloses a fine boring cutter for a numerical control machine tool, which belongs to the technical field of fine boring cutters and comprises a boring cutter holder for mounting the fine boring cutter on the numerical control machine tool, a boring cutter body is arranged at the top end of the boring cutter holder, a fixing component is arranged inside the boring cutter holder, and two connecting plates are arranged on the boring cutter holder through the fixing component. The opposite sides of the two connecting plates are jointly provided with a clamping plate. According to the fine boring cutter for the numerical control machine tool, due to the design of the fixing assembly, the connecting plates and the positioning assembly, the fixing assembly is opened to be separated from the two connecting plates, the clamping plates are driven to move upwards under the elastic action of the first springs, then the boring cutter body is taken out, and the boring cutter body is conveniently disassembled in the mode, so that the boring cutter body is conveniently disassembled, replaced or adjusted; the whole process is convenient to operate, screws do not need to be disassembled and assembled repeatedly, and manpower waste is avoided; meanwhile, through the design of the positioning assembly, the boring cutter body can be positioned before being installed, and therefore the boring cutter body can be rapidly installed.

Description

Technical Field

[0001] This utility model belongs to the field of precision boring tool technology, and in particular to a precision boring tool for CNC machine tools. Background Technology

[0002] A precision boring tool is a type of tool used for machining holes. It typically has a round shank, although square shanks are sometimes used for larger workpieces. It's commonly found on vertical lathes and is most frequently used for machining internal holes, reaming, and contouring. Precision boring tools ensure hole diameter accuracy, as well as positional accuracy, surface roughness, and roundness. The boring tool is fixed to the machine tool via a boring bar holder and then rotated by the machine tool spindle to perform cutting. In practice, boring tools on CNC machine tools are mostly fixed with mounting screws. When the position of the boring tool needs to be adjusted or it needs to be replaced, the screws must be repeatedly removed and reinstalled, making the entire process cumbersome and wasting manpower.

[0003] Chinese patent document (application publication number CN220862760U) discloses a precision boring tool for a CNC machine tool, which includes a CNC machine tool. One side of the CNC machine tool is provided with a clamping assembly for clamping a part, and the other side of the CNC machine tool is provided with a base assembly for mounting different machining tools. A precision boring tool for machining the part is mounted on one side of the base assembly.

[0004] It is evident that the patent documents cited above also have the same problem. When installing the precision boring tool, it is fixed by mounting screws. When the position of the precision boring tool needs to be adjusted or it needs to be replaced, the screws need to be repeatedly removed and installed. The whole process is cumbersome, resulting in a waste of manpower. Utility Model Content

[0005] The purpose of this invention is to provide a precision boring tool for CNC machine tools to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a precision boring tool for CNC machine tools, comprising a boring tool holder for mounting the precision boring tool on a CNC machine tool, a boring tool body being provided at the top of the boring tool holder, a fixing component being provided inside the boring tool holder, and two connecting plates being provided through the fixing component, a clamping plate being provided on the opposite side of the two connecting plates, and a first spring being installed at the inner top of each of the two connecting plates;

[0007] The fixing assembly includes a lead screw, one end of which is equipped with a knob, and the other end of which is equipped with a connecting block. A second spring is installed on one side of the connecting block. Two connecting rods are installed at both the upper and lower ends of the connecting block. The four connecting rods are provided with two mounting rods. One end of each mounting rod is engaged with one side of a connecting plate.

[0008] As a preferred embodiment, the top of the boring bar holder is provided with a fixing groove, and the inner side of the fixing groove is provided with a positioning component. The positioning component includes a positioning plate, and a positioning block is installed on the front side of the positioning plate. One end of the positioning block is engaged with the rear end of the boring bar body.

[0009] In a preferred embodiment, one end of the second spring is fixedly connected to the inner wall of the boring bar holder.

[0010] As a preferred embodiment, a fixing block is installed on the top of both sides of the boring bar holder, and the top of the two fixing blocks is fixedly connected to the top of the two first springs respectively.

[0011] As a preferred embodiment, elastic blocks are installed on both sides of the positioning plate, and the outer walls of the two elastic blocks are respectively engaged and connected to the two sides of the boring bar holder.

[0012] As a preferred embodiment, the top of the clamping plate is provided with a clearance groove for the positioning plate to make way, and the inner side of the clearance groove is slidably connected to the outer wall of the positioning plate.

[0013] In a preferred embodiment, the outer walls of the two connecting plates are slidably connected to the inner sides of the two fixing blocks, respectively.

[0014] Compared with the prior art, the technical effects and advantages of this utility model are as follows:

[0015] This precision boring tool for CNC machine tools benefits from the design of the fixing component, connecting plate, and positioning component. By opening the fixing component and separating it from the two connecting plates, the clamping plate is moved upward under the elastic action of the first spring, and then the boring tool body is taken out. This method facilitates the disassembly of the boring tool body, making it easy to replace or adjust. The entire process is convenient and does not require repeated disassembly and assembly of screws, avoiding the waste of manpower. At the same time, the design of the positioning component allows the boring tool body to be positioned before installation, enabling quick installation.

[0016] By using a positioning plate and an elastic block, the elastic block is pressed inward, and then the positioning plate is removed upward to separate it from the fixing groove at the top of the boring bar holder. Then, a new positioning plate is installed in the fixing groove in the same way. This method facilitates the replacement of positioning components to meet the positioning and installation requirements of different boring bar bodies. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the boring bar holder of this utility model;

[0020] Figure 3 This is a schematic diagram of the connection structure of the clamping plate of this utility model;

[0021] Figure 4 This is a schematic diagram of the fixing component structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the positioning component structure of this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] In the diagram: 1. Boring tool holder; 2. Boring tool body; 3. Fixing assembly; 4. Connecting plate; 5. Clamping plate; 6. First spring; 7. Positioning assembly; 8. Fixing block;

[0025] 101. Fixing groove;

[0026] 301. Lead screw; 302. Torque; 303. Connecting block; 304. Second spring; 305. Connecting rod; 306. Mounting rod;

[0027] 501, clearance slot;

[0028] 701. Positioning plate; 702. Positioning block; 703. Elastic block. Detailed Implementation

[0029] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.

[0030] Unless otherwise defined, the directions mentioned herein, such as up, down, left, right, front, back, inside, and outside, are based on the directions shown in the figures of this utility model, and are explained here together.

[0031] The connection method can be any existing method, such as bonding, welding, or bolting, depending on the actual needs.

[0032] This embodiment provides, for example Figures 1 to 5The boring bar holder 1 shown is used to mount a precision boring tool on a CNC machine tool. The boring bar holder 1 is connected to the CNC machine tool. The top of the boring bar holder 1 is provided with a boring bar body 2. The interior of the boring bar holder 1 is provided with a fixing component 3. Two connecting plates 4 are provided through the fixing component 3. The connecting plates 4 are L-shaped. The two connecting plates 4 are provided with a clamping plate 5 on opposite sides. The bottom end of the clamping plate 5 contacts the top end of the boring bar body 2. The clamping plate 5 can help fix the boring bar body 2. A first spring 6 is installed on the inner top end of both connecting plates 4.

[0033] The fixing component 3 includes a lead screw 301, the outer wall of which penetrates the boring bar holder 1 and is threadedly connected to the inside of the boring bar holder 1. A knob 302 is installed at one end of the lead screw 301, and the outer wall of the knob 302 has anti-slip threads to increase the friction between the hand and the knob 302, facilitating its rotation. A connecting block 303 is mounted at the other end of the lead screw 301, and the lead screw 302 is bearing-connected to the connecting block 303. A second spring 304 is installed on one side of the connecting block 303. Two connecting rods 305 are mounted at both the upper and lower ends of the connecting block 303, and the four connecting rods 305 share two mounting rods 306. The connection method between the connecting rods 305 and the connecting block 303 and the mounting rods 306 is as follows: The bearing connection is such that the outer wall of the mounting rod 306 penetrates the boring bar holder 1 and is slidably connected to the boring bar holder 1. One end of each of the two mounting rods 306 is engaged with one side of each of the two connecting plates 4. Several mounting holes are provided on one side of the connecting plate 4. The mounting rods 306 are engaged with the connecting plate 4 through the mounting holes. When the mounting rods 306 are engaged with the connecting plate 4, the first spring 6 is in a compressed state. Rotating the knob 302 drives the connecting block 303 to move outward, which in turn drives the two mounting rods 306 to move towards each other. After they are separated from the connecting plate 4, the clamping plate 5 is separated from the boring bar body 2 under the elastic action of the first spring 6. Then the boring bar body 2 can be taken out outward. This makes it easy to disassemble the boring bar body and to replace or adjust it.

[0034] This embodiment provides a boring bar holder 1 with a fixing groove 101 at the top and a positioning component 7 on the inner side of the fixing groove 101. The positioning component 7 can position the boring bar when it is installed, which facilitates quick installation of the boring bar. The positioning component 7 includes a positioning plate 701. The bottom end of the positioning plate 701 is engaged with the inner side of the fixing groove 101. A positioning block 702 is installed on the front side of the positioning plate 701. One end of the positioning block 702 is engaged with the rear end of the boring bar body 2. The rear end of the boring bar body 2 is provided with a positioning groove that matches the positioning block 702.

[0035] In this embodiment, one end of the second spring 304 is fixedly connected to the inner side wall of the boring bar holder 1. Fixing blocks 8 are installed on the top of both sides of the boring bar holder 1, and the top ends of the two fixing blocks 8 are fixedly connected to the top ends of the two first springs 6 respectively.

[0036] In this embodiment, elastic blocks 703 are installed on both sides of the positioning plate 701. The outer walls of the two elastic blocks 703 are respectively engaged with the two sides of the boring bar holder 1. The fixing groove 101 has locking holes on both sides, and the two locking holes pass through the two sides of the boring bar holder 1. The top of the clamping plate 5 has a clearance groove 501 for the positioning plate 701 to make way. The inner side of the clearance groove 501 is slidably connected to the outer wall of the positioning plate 701.

[0037] In this embodiment, the outer walls of two connecting plates 4 are slidably connected to the inner sides of two fixing blocks 8, respectively.

[0038] Working principle

[0039] When the boring bar needs to be replaced or adjusted, turn the knob 302. The rotation of the knob 302 drives the connecting block 303 to move outward through the lead screw 301. The movement of the connecting block 303 drives the two mounting rods 306 to move towards each other through the four connecting rods 305 until the two mounting plates 306 are separated from the two connecting plates 4. At this time, under the elastic action of the first spring 6, the connecting plate 4 moves upward until the clamping plate 5 is no longer in contact with the boring bar body 2. Then, the boring bar body 2 is taken out. This method facilitates the disassembly of the boring bar body, making it easy to replace or adjust. The whole process is convenient and does not require repeated disassembly and assembly of screws, avoiding the waste of manpower. When positioning and installing different models of boring bar bodies 2, press the elastic block 703 inward, and then take out the positioning plate 701 upward. Similarly, install the new positioning plate 701 in the fixing groove 101. This facilitates the replacement of positioning components to meet the positioning and installation requirements of different boring bar bodies 2.

[0040] It should be noted that, in this document, relational terms such as "one" and "two" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fine boring tool for a CNC machine tool, comprising a boring tool holder (1) for mounting the fine boring tool on the CNC machine tool, wherein a boring tool body (2) is provided at the top of the boring tool holder (1), and characterized in that: The boring tool seat (1) is provided with a fixing assembly (3) inside, and two connecting plates (4) are provided through the fixing assembly (3), and a clamping plate (5) is provided on opposite sides of the two connecting plates (4), and a first spring (6) is installed on the inner top end of each of the two connecting plates (4); The fixing assembly (3) comprises a screw rod (301), one end of which is provided with a twisting wheel (302), the other end of which is provided with a connecting block (303), one side of which is provided with a second spring (304), the upper and lower ends of the connecting block (303) are provided with two connecting rods (305), the four connecting rods (305) are provided with two mounting rods (306), one end of the two mounting rods (306) is respectively engaged and connected with one side of two connecting plates (4).

2. A fine boring tool for a CNC machine tool according to claim 1, characterized in that: A fixing groove (101) is provided at the top end of the boring tool seat (1), a positioning assembly (7) is provided inside the fixing groove (101), and the positioning assembly (7) comprises a positioning plate (701), a positioning block (702) is installed on the front side of the positioning plate (701), and one end of the positioning block (702) is engaged with the rear end of the boring tool body (2).

3. A fine boring tool for a CNC machine tool according to claim 1, characterized in that: One end of the second spring (304) is fixedly connected to the inner side wall of the boring tool seat (1).

4. A fine boring tool for a CNC machine tool according to claim 1, characterized in that: Fixed blocks (8) are installed on the tops of both sides of the boring tool seat (1), and the tops of the two fixed blocks (8) are fixedly connected to the tops of the two first springs (6) respectively.

5. A fine boring tool for a CNC machine tool according to claim 2, characterized in that: Elastic blocks (703) are installed on both sides of the positioning plate (701), and the outer walls of the two elastic blocks (703) are respectively engaged and connected with the two sides of the boring tool seat (1).

6. A fine boring tool for a CNC machine tool according to claim 2, characterized in that: A clearance groove (501) for the positioning plate (701) to make way is provided at the top end of the clamping plate (5), and the inner side of the clearance groove (501) is slidably connected to the outer wall of the positioning plate (701).

7. A fine boring tool for a CNC machine tool according to claim 4, characterized in that: The outer walls of the two connecting plates (4) are respectively slidably connected to the inner sides of the two fixing blocks (8).

Images