Small hole boring cutter with fine adjustment cutter bar

Abstract

The utility model relates to the technical field of boring cutters, and discloses a small hole boring cutter of a fine-tuning cutter bar, which comprises a cutter bar main body, a boring cutter main body is arranged in the cutter bar main body, the top end of the boring cutter main body is fixedly connected with a sliding block, the two sides of the sliding block are fixedly connected with trapezoidal blocks, and the trapezoidal blocks are fixedly connected with the cutter bar main body. Trapezoidal grooves are formed in the two sides of the interior of the cutter bar main body, the interiors of the trapezoidal grooves are slidably connected with trapezoidal blocks, pop-up openings are formed in the front end and the rear end of the cutter bar main body, and pressing grooves are formed in the front end and the rear end of a sliding block. According to the small hole boring cutter with the fine-tuning cutter bar, the boring cutter body convenient to adjust and fix is adopted, an operator can adjust the using position of the boring cutter body more easily, more stable movement guiding can be provided through the design of a trapezoidal block and a trapezoidal groove, the displacement amount of the boring cutter body can be more accurately controlled in the adjusting process, and the boring cutter body is more convenient to adjust and fix. And more accurate processing size control can be realized.

Description

Technical Field

[0001] This utility model relates to the field of boring tool technology, and in particular to a small hole boring tool with a fine-tuning tool holder. Background Technology

[0002] A boring tool is a cutting tool used on machine tools such as boring machines, lathes, and milling machines to bore existing holes in workpieces. It cuts the hole through the rotation and feed motion of the tool to achieve the purpose of enlarging the hole diameter, improving the hole's accuracy and surface quality. Ordinary boring tools can complete general boring operations, but for small hole machining, especially in situations where high machining accuracy and height adjustment are required, ordinary boring tools may not be able to meet the requirements. Small hole boring tools with adjustable tool holders add a height fine-tuning function, which can more accurately control the position of the tool in the height direction, thereby machining small holes more precisely and improving machining accuracy and quality.

[0003] When making fine adjustments to the height of existing boring tools, thread adjustment is generally used. Thread adjustment requires rotating the thread to move the tool up and down. The number of rotations is relatively large, and the adjustment process is relatively slow. Especially when the tool position needs to be adjusted frequently, it will greatly reduce the machining efficiency. Moreover, the thread is prone to wear after long-term use, which will lead to an increase in thread clearance and affect the adjustment accuracy. Utility Model Content

[0004] The technical problem to be solved by this utility model is that the existing technology has the disadvantages of a relatively cumbersome height adjustment process and easy wear, which will cause a decrease in accuracy. To this end, we propose a small hole boring tool with a fine adjustment tool holder.

[0005] To achieve the above objectives, this application adopts the following technical solution: a small-hole boring bar with a fine-tuning tool holder, comprising a tool holder body, a boring bar body installed inside the tool holder body, a sliding block fixedly connected to the top of the boring bar body, trapezoidal blocks fixedly connected to both sides of the sliding block, trapezoidal grooves opened on both sides inside the tool holder body, the interior of the trapezoidal grooves being slidably connected to the trapezoidal blocks, spring-loaded outlets opened at the front and rear ends of the tool holder body, pressing grooves opened at the front and rear ends of the sliding block, a spring spring fixedly connected inside the pressing groove, a pressing block fixedly connected to the end of the spring spring, and the spring-loaded outlets and the interior of the pressing grooves being slidably connected to the pressing blocks.

[0006] Preferably, a first sliding groove is provided on both sides of the inside of the pressing groove, and a first slider is fixedly connected to both sides of the pressing block, and the inside of the first sliding groove is slidably connected to the first slider.

[0007] Preferably, two locking grooves are provided on both sides of the tool holder body, and a locking block is locked inside the locking groove. A load-bearing block is fixedly connected to the side of the locking block near the tool holder body.

[0008] Preferably, a scale bar is installed on one side of the main body of the tool holder.

[0009] Preferably, the bottom and rear ends of the boring bar body are provided with chip grooves, and the number of chip grooves is multiple.

[0010] Preferably, the size of the pressing block is designed to match the inner diameter of the spring outlet.

[0011] Preferably, both the tool holder body and the boring tool body are made of cemented carbide.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] In this invention, when it is necessary to adjust the working height of the boring bar body, the pressing block is pressed inward to move it into the pressing groove, thereby releasing the boring bar body from its fixed position. At this time, the working height of the boring bar body is adjusted by using the trapezoidal block and the trapezoidal groove. After adjusting to the appropriate position, the pressing block is aligned with the spring outlet. The elastic force of the pressing groove then causes the pressing block to pop out into the spring outlet, achieving stable fixation of the boring bar body after position adjustment. By adopting a boring bar body that is easy to adjust and fix, operators can more easily adjust the working position of the boring bar body. Furthermore, the design of the trapezoidal block and the trapezoidal groove provides a more stable movement guide, enabling more precise control of the displacement of the boring bar body during adjustment, which helps to achieve more accurate machining dimension control. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of the boring tool and tool holder of this utility model;

[0015] Figure 2 This is a schematic diagram of the main structure of the boring tool of this utility model;

[0016] Figure 3 This is a cross-sectional schematic diagram of the internal structure of the tool holder of this utility model;

[0017] Figure 4 This is a schematic cross-sectional view of the internal structure of the sliding block of this utility model;

[0018] Figure 5 This is a schematic diagram of the main structure of the tool holder of this utility model.

[0019] Legend: 1. Tool holder body; 2. Boring tool body; 3. Sliding block; 4. Trapezoidal block; 5. Trapezoidal groove; 6. Spring outlet; 7. Pressing groove; 8. Spring spring; 9. Pressing block; 10. First sliding groove; 11. First slider; 12. Locking groove; 13. Locking block; 14. Weight block; 15. Scale bar; 16. Chip groove. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and preferred embodiments. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0021] Reference Figure 1 - Figure 4 As shown, this utility model provides a technical solution: a small-hole boring bar with a fine-tuning tool holder, including a tool holder body 1, a boring bar body 2 installed inside the tool holder body 1, a sliding block 3 fixedly connected to the top of the boring bar body 2, trapezoidal blocks 4 fixedly connected to both sides of the sliding block 3, trapezoidal grooves 5 opened on both sides inside the tool holder body 1, the interior of the trapezoidal grooves 5 slidably connected to the trapezoidal blocks 4, spring-loaded outlets 6 opened at the front and rear ends of the tool holder body 1, pressing grooves 7 opened at the front and rear ends of the sliding block 3, a spring spring 8 fixedly connected inside the pressing groove 7, a pressing block 9 fixedly connected to the end of the spring spring 8, and the interiors of the spring-loaded outlet 6 and the pressing groove 7 slidably connected to the pressing block 9. When it is necessary to adjust the working height of the boring bar body 2... When pressing the pressing block 9 inward, it moves into the pressing groove 7, releasing the boring bar body 2 from its fixed position. Then, the boring bar body 2 is adjusted in height using the trapezoidal block 4 and trapezoidal groove 5. After adjusting to the appropriate position, the pressing block 9 is aligned with the spring outlet 6. The spring force of the pressing groove 7 causes the pressing block 9 to pop out into the spring outlet 6, achieving stable fixation of the boring bar body 2 after position adjustment. By adopting a conveniently adjustable and fixed boring bar body 2, operators can more easily adjust the position of the boring bar body 2. Furthermore, the design of the trapezoidal block 4 and trapezoidal groove 5 provides a more stable movement guide, allowing for more precise control of the displacement of the boring bar body 2 during adjustment, thus contributing to more accurate machining dimension control.

[0022] Reference Figure 4 As shown in this embodiment: a first sliding groove 10 is provided on both sides of the inside of the pressing groove 7, and a first slider 11 is fixedly connected to both sides of the pressing block 9. The inside of the first sliding groove 10 is slidably connected to the first slider 11. Through the setting of the first sliding groove 10 and the first slider 11, the pressing block 9 can have a stable limiting effect when it is popped out by the elastic force of the elastic spring 8, thereby effectively preventing the pressing block 9 from popping out too much and causing it to fall off, and improving the fixing effect of the boring bar body 2 after adjustment.

[0023] Reference Figure 3 and Figure 5 As shown in this embodiment: two locking grooves 12 are provided on both sides of the tool holder body 1. A locking block 13 is locked inside the locking groove 12. A load block 14 is fixedly connected to the side of the locking block 13 near the tool holder body 1. By installing the load block 14 on the surface of the tool holder body 1, the harmful vibration caused by the high-speed rotation of the boring tool body 2, centrifugal force and the imbalance of the boring tool body 2 itself can be reduced or eliminated during high-speed boring, thereby effectively improving the machining accuracy and surface quality, and enabling the boring tool body 2 to be used for machining at higher speeds.

[0024] Reference Figure 5 As shown in this embodiment: A scale bar 15 is installed on one side of the tool holder body 1. By installing the scale bar 15 on one side of the boring tool body 2, the boring tool body 2 can accurately read the adjustment value when adjusting the height, thereby improving the accuracy and convenience of operation.

[0025] Reference Figure 2 As shown in this embodiment, chip grooves 16 are provided at both the bottom and rear ends of the boring bar body 2. There are multiple chip grooves 16. By providing chip grooves 16 on the surface of the boring bar body 2, the chips can be curled into a certain shape by the action of the chip grooves 16 during the formation process, which facilitates the discharge of chips, prevents chips from getting tangled on the tool holder, improves processing conditions and enhances the cleanliness of the processing environment.

[0026] Reference Figure 3 and Figure 4 As shown in this embodiment, the size of the pressing block 9 is designed to match the inner diameter of the spring outlet 6. By adopting the matching size setting, the pressing block 9 can have a more stable limiting effect inside the spring outlet 6, thereby making the boring tool body 2 less likely to fall off due to vibration during processing after the position is adjusted, and further improving the stability of the boring tool body 2.

[0027] Reference Figure 1 As shown in this embodiment, both the tool holder body 1 and the boring tool body 2 are made of cemented carbide. By using cemented carbide to make the tool holder body 1 and the boring tool body 2, it is possible to maintain good cutting edge sharpness when boring small holes, reduce the wear of the boring tool body 2, improve machining accuracy and surface quality, extend tool life, and reduce machining costs. In addition, cemented carbide has good heat resistance and is not prone to thermal deformation, ensuring the stability of machining dimensions.

[0028] Working principle: When the height of the boring bar body 2 needs to be adjusted, press the pressing block 9 inward to move it into the pressing groove 7, thus releasing the boring bar body 2 from its fixed position. Then, adjust the height of the boring bar body 2 using the trapezoidal block 4 and trapezoidal groove 5. After adjusting to the appropriate position, align the pressing block 9 with the spring outlet 6. The spring force of the pressing groove 7 will then cause the pressing block 9 to pop out into the spring outlet 6, achieving stable fixation of the boring bar body 2 after position adjustment. By using a conveniently adjustable and fixed boring bar body 2, operators can more easily adjust the position of the boring bar body 2. Furthermore, the trapezoidal block 4 and... The trapezoidal groove 5 provides a more stable guide for movement, enabling more precise control of the displacement of the boring bar body 2 during adjustment. This helps achieve more accurate machining dimension control. The first slide groove 10 and the first slider 11 ensure that the pressing block 9 has a stable limiting effect when ejected by the spring force 8, effectively preventing the pressing block 9 from ejecting excessively and falling off, thus improving the fixing effect of the boring bar body 2 after adjustment. The installation of a load-bearing block 14 on the surface of the tool holder body 1 can reduce or eliminate the high-speed rotation, centrifugal force, and boring force of the boring bar body 2 during high-speed boring. The unbalance of the boring bar body 2 itself causes harmful vibrations, thus effectively improving machining accuracy and surface quality, enabling the boring bar body 2 to be used for machining at higher speeds. By installing a scale strip 15 on one side of the boring bar body 2, the adjustment value can be accurately read when adjusting the height of the boring bar body 2, improving the accuracy and convenience of operation. By setting a chip groove 16 on the surface of the boring bar body 2, the chips can be curled into a certain shape by the action of the chip groove 16 during the chip formation process, facilitating chip discharge, preventing chips from wrapping on the tool holder, improving machining conditions and enhancing the cleanliness of the machining environment. By adopting an appropriate size setting, the pressing block 9 can have a more stable limiting effect inside the spring outlet 6, which makes the boring tool body 2 less likely to fall off due to vibration during machining after the position is adjusted, further improving the stability of the boring tool body 2. By using a tool holder body 1 and boring tool body 2 made of cemented carbide, the cutting edge can maintain good sharpness when boring small holes, reducing the wear of the boring tool body 2, improving machining accuracy and surface quality, extending tool life, and reducing machining costs. In addition, cemented carbide has good heat resistance and is not prone to thermal deformation, ensuring the stability of machining dimensions.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A micro-adjustable bore bar for a micro-adjustable boring head, comprising a boring bar body (1), characterised in that: The tool holder body (1) is equipped with a boring bar body (2). A sliding block (3) is fixedly connected to the top of the boring bar body (2). Trapezoidal blocks (4) are fixedly connected to both sides of the sliding block (3). Trapezoidal grooves (5) are opened on both sides of the inside of the tool holder body (1). The inside of the trapezoidal grooves (5) is slidably connected to the trapezoidal blocks (4). Spring outlets (6) are opened at the front and rear ends of the tool holder body (1). Pressing grooves (7) are opened at the front and rear ends of the sliding block (3). A spring spring (8) is fixedly connected to the inside of the pressing groove (7). A pressing block (9) is fixedly connected to the end of the spring spring (8). The inside of the spring outlet (6) and the pressing groove (7) are slidably connected to the pressing block (9).

2. A micro-adjustable small hole boring bar according to claim 1 wherein: The pressing groove (7) has a first sliding groove (10) on both sides, and the pressing block (9) has a first slider (11) fixedly connected to both sides. The inside of the first sliding groove (10) is slidably connected to the first slider (11).

3. A micro-adjustable small hole boring tool for a tool bar according to claim 1, characterized in that: Two snap-fit ​​grooves (12) are provided on both sides of the tool holder body (1). A snap-fit ​​block (13) is snapped into the inside of the snap-fit ​​groove (12). A load block (14) is fixedly connected to the side of the snap-fit ​​block (13) near the tool holder body (1).

4. A micro-adjustable small hole boring tool according to claim 1 wherein: A scale bar (15) is installed on one side of the main body (1) of the tool holder.

5. A micro-adjustable small hole boring tool for a tool bar according to claim 1, characterized in that: The bottom and rear ends of the boring bar body (2) are provided with chip grooves (16), and there are multiple chip grooves (16).

6. A micro-adjustable small hole boring tool for a tool bar according to claim 1, characterized in that: The size of the pressing block (9) is designed to be compatible with the inner diameter of the spring outlet (6).

7. A micro-adjustable small hole boring tool for a tool bar according to claim 1 wherein: Both the tool holder body (1) and the boring tool body (2) are made of cemented carbide.

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