Combined tool, calibration device and calibration method

Abstract

The invention relates to the technical field of machining, and particularly discloses a combined cutter which comprises a cutter handle, a center drill and end face milling cutters, the center drill is installed in the center of the cutter handle, and the end face milling cutters are distributed around the center drill and installed in a receding groove. The calibration device comprises a mounting base and a measuring mechanism, the measuring mechanism is provided with a clamping assembly, a positioning assembly and a calibration assembly, the combined tool is positioned and clamped, and calibration is carried out through a center hole standard block, a height conversion plate, a guide mechanism and a calibrator. Meanwhile, an end face calibration cushion block is further arranged and used for determining a scraping and milling plane of the combined cutter. The calibration method comprises the steps that the combined tool is placed in the positioning block and pressed tightly, the center drill makes contact with the center hole standard block to drive the height conversion plate to slide, the calibration instrument is used for measuring the moving distance and adjusting the installation position of the center drill, and the center drill is fixed to complete calibration. The combined tool and the calibration device and method have the advantages of being simple in structure, accurate in calibration, convenient to operate and the like, and are suitable for calibration of combined tools of various models.

Description

Technical Field

[0001] The present invention relates to the technical field of machining, and in particular to a combined tool, and also to a calibration device for the combined tool and a calibration method for the calibration device. Background Art

[0002] In the machining industry, the machining of cylindrical workpieces is a common and important process. During the machining process of such workpieces, it is usually necessary to perform precise milling and drilling operations on the end faces to meet the positioning and machining requirements of subsequent processes. In traditional production processes, this machining process is completed through two independent processes: first, the end face of the workpiece is milled with a milling cutter to achieve the required flatness; then a center drill is used to drill a center hole on the milled plane as a reference for subsequent machining.

[0003] However, this traditional processing method has many shortcomings. First, the conversion between the two processes requires additional clamping and positioning time, which not only reduces processing efficiency but also increases the risk of errors. Second, since the two processes are carried out separately, it is difficult to ensure the position accuracy and coaxiality between the milling plane and the center hole, which directly affects the quality and accuracy of subsequent processing.

[0004] In order to overcome these shortcomings, the industry began to explore the possibility of integrating the two processes of milling and drilling into one. As a result, a combination tool that integrates the end mill and the center drill came into being. This tool cleverly integrates the milling cutter and the center drill on the same cutter head, achieving the simultaneous completion of milling and drilling operations in one clamping, thereby greatly improving processing efficiency and accuracy. However, there are problems such as the inconvenience of adjusting the center drill and the inability to accurately position it.

[0005] This combination tool also faces new problems in practical applications. Since the position of the milling cutter and center drill on the cutter head needs to be precisely controlled to ensure that the machined plane and hole meet the design requirements, the installation and adjustment of the tool becomes particularly important. In particular, the height difference between the milling cutter and the center drill in the Z-axis direction is a key factor that directly affects the processing quality. However, this height difference is usually very small, and it is difficult to achieve the required accuracy using conventional measuring tools and measurement methods, making the installation and adjustment of the tool extremely difficult.

[0006] In addition, in order to ensure the machining accuracy and stability of the combined tool, it is also necessary to calibrate it regularly. Traditional calibration methods often rely on manual operations and simple measuring tools, which are not only inefficient, but also difficult to ensure the accuracy and consistency of calibration. Therefore, it is particularly important to develop a device and method specifically for combined tool calibration. Summary of the invention

[0007] The first purpose of the present invention is to provide a combined tool, which aims to solve the problems of low efficiency and difficulty in ensuring precision caused by the separation of milling and drilling processes in the processing of cylindrical workpieces in the prior art. The present invention combines the end milling cutter and the center drill on the same tool holder through integrated design, so that the end milling and drilling operations can be completed simultaneously in one clamping, which significantly improves the processing efficiency and precision.

[0008] In order to solve the above technical problems, the present invention provides a combined tool, comprising:

[0009] The tool handle is provided with a connecting part and a mounting part. The connecting part is connected to the machine tool tool holder. The center of the tool handle is provided with a mounting hole, and a circumferential groove is provided. The mounting part is used for mounting the tool.

[0010] The center drill is installed in the center of the mounting part through the mounting hole and is used to process the center hole of the product.

[0011] The end milling cutter is installed in the mounting groove set in the clearance groove through the positioning screw, and the circular array is distributed around the center drill for milling the end face of the product.

[0012] In addition to the above technical features, this application also makes improvements in the following aspects:

[0013] In some embodiments, a directional screw is provided on the mounting portion, and the directional screw abuts against the center drill through a threaded hole provided in a radial direction of the mounting portion, so as to adjust the installation direction of the center drill.

[0014] In some embodiments, a fixed-length stop bolt is provided at the center of the tool handle, which is threadedly connected to the mounting hole, and the end thereof abuts against one end of the center drill, so as to adjust the length of the center drill extending out of the mounting hole.

[0015] In some embodiments, a cutting fluid nozzle is also provided on the tool handle, and the cutting fluid nozzle is provided along the axial direction of the tool handle, and at least one cutting fluid nozzle is provided, and is connected to the water channel of the machine tool.

[0016] The second object of the present invention is to provide a calibration device for a combined tool to solve the problems in the prior art that the calibration process of the combined tool is complicated, inefficient, and difficult to ensure precision. Through the device, the center drill and the end mill of the combined tool can be calibrated quickly and accurately, ensuring the precision and stability during the processing, thereby improving production efficiency and product quality.

[0017] The present invention discloses a calibration device for a combined tool, comprising a mounting base and a measuring mechanism.

[0018] The mounting base comprises a bottom plate, a top plate and height-fixing rods arranged on the bottom plate and the top plate; the top plate is arranged parallel to the bottom plate.

[0019] The measuring mechanism comprises a clamping assembly, a positioning assembly and a calibration assembly which are arranged on the upper part of the top plate.

[0020] The clamping assembly and the positioning assembly cooperate with each other to position and clamp the combined tool so as to calibrate the combined tool.

[0021] The calibration component comprises a center hole standard block, a height conversion plate and a guide mechanism arranged between a top plate and a bottom plate, and a calibrator.

[0022] The height conversion plate is connected to the bottom plate through a guide mechanism and can slide up and down along the guide mechanism; the installation height of the height conversion plate is lower than the height of the top plate, and a gap is left between the height conversion plate and the top plate to form a measuring space.

[0023] The lower end of the center hole standard block is fixedly connected to the height conversion plate, and the upper end extends into the center through hole set in the center of the top plate, and can move up and down along the center through hole; in the initial state, the upper end surface of the center hole standard block is on the same horizontal plane as the upper end surface of the top plate.

[0024] A center calibration hole for calibration is arranged at the center of the upper end of the center standard block; the center calibration hole is adapted to the shape of the drill bit of the center drill.

[0025] An end face calibration pad is also provided on the upper part of the top plate. The end face calibration pad is installed on the top plate and is used to contact the end face scraping cutter on the combined tool to establish the scraping plane of the combined tool.

[0026] The calibrator is mounted on the top plate via a mounting base and is used to measure the moving distance of the height conversion plate.

[0027] In some embodiments, the guide mechanism includes a guide light rod and a linear bearing, the guide light rod is connected to the base plate and the height conversion plate, the linear bearing is connected to the height conversion plate and slides on the guide light rod to ensure the parallelism of the height conversion plate during movement.

[0028] In some embodiments, the guide mechanism further includes a reset spring, which is sleeved on the guide light rod and disposed between the base plate and the linear bearing, and is used to push the linear bearing, the height conversion plate and the center hole standard block to reset.

[0029] In some embodiments, the clamping assembly includes a thread replacement block, a clamping plate and a butterfly nut. The thread replacement block is installed on the positioning block, and the clamping plate is sleeved with the thread replacement block. By tightening the butterfly nut, the clamping plate is driven downward to press the combined tool.

[0030] In some embodiments, the positioning assembly includes a positioning base and a positioning block, the positioning block is installed in the middle of the positioning base and fixedly connected to the positioning base through a spring plunger; the positioning base is installed on the upper part of the top plate, and a positioning groove is arranged inside the positioning block, and the shape of the positioning groove is adapted to the shape of the tool handle, and the positioning block is used to fix the combination tool and align its center hole drill with the center hole standard block.

[0031] In some embodiments, the positioning block is provided in a plurality of blocks, and each positioning block is of a different model to adapt to the calibration of different models of combined tools.

[0032] In some embodiments, the height-fixing rods are provided in a plurality, and the plurality of height-fixing rods have the same length and are distributed between the top plate and the bottom plate to keep the top plate parallel to the bottom plate after installation.

[0033] In some embodiments, the thread replacement block is installed on the positioning block, a clamp is sleeved on the thread replacement block, and a butterfly nut is screwed on the threaded rod on the thread replacement block. By tightening the butterfly nut, the clamp can be driven downward to press the combined tool.

[0034] The third object of the present invention is to provide a calibration method for a combined tool, using the calibration device for the combined tool, the calibration method comprising the following steps:

[0035] Place the combined tool into the positioning block and clamp the combined tool by the clamping assembly.

[0036] The center hole drill of the combined tool contacts the center hole standard block and drives the height conversion plate to slide downward along the guide mechanism.

[0037] The moving distance of the height conversion plate is measured by a dial indicator, and the installation position of the center hole drill on the calibrated combined tool is adjusted according to the measurement result.

[0038] Repeat the above steps until the reading of the calibrator meets the requirements, fix the center hole drill on the calibrated combination tool, and complete the calibration.

[0039] By adopting the above technical solution, the present invention has at least one of the following beneficial effects:

[0040] (I) Technical effects of combined tools:

[0041] 1. Efficient processing: This combination tool integrates a center drill and a face milling cutter distributed in a circular array, realizing the functions of center hole processing and face milling on the same tool at the same time. It can complete the center hole processing and face milling of the product in one clamping, significantly improving the processing efficiency.

[0042] 2. Precise adjustment: The directional screws on the mounting part allow the user to precisely adjust the installation direction of the center drill to ensure that the center hole is in the expected direction. At the same time, the fixed-length stop bolts make the extension length of the center drill adjustable, further improving the flexibility and precision of processing to meet the needs of different processing depths.

[0043] 3. Cooling and lubrication: The cutting fluid nozzles set on the tool handle can directly spray the cutting fluid into the processing area, effectively reducing the cutting temperature, reducing tool wear, and improving processing quality and tool life.

[0044] (II) Technical effect of the calibration device of the combined tool:

[0045] 1. Stable calibration: The calibration device ensures the parallelism of the top plate and the bottom plate through the structural design of the bottom plate, top plate and height-fixing rod, providing a stable reference surface for the calibration of the combined tool. At the same time, the design of the guide mechanism ensures the parallelism of the height conversion plate during movement, and the reset spring allows for quick reset after calibration, improving the stability and reliability of the calibration.

[0046] 2. Accurate measurement: The calibration components in the measuring mechanism include a center hole standard block, a height conversion plate and a calibrator. Through the cooperation of the center hole standard block and the height conversion plate, as well as the precise measurement of the calibrator, a high-precision calibration of the center drill position of the combination tool is achieved. The offset of the center drill of the combination tool can be accurately measured to ensure the accuracy of the calibration, thereby ensuring the accuracy of the center hole position of the processed product and improving the overall quality of the product.

[0047] 3. Easy to operate: The clamping assembly adopts the design of threaded replacement block, clamping plate and butterfly nut, which makes the clamping process of the combined tool simple and quick, reduces the difficulty of operation and improves work efficiency. In addition, the combined design of the clamping assembly and the positioning assembly makes the combined tool easy and fast to locate and clamp, simplifies the calibration process and improves work efficiency.

[0048] 4. Strong adaptability: The positioning blocks in the positioning assembly are set to multiple pieces, and each positioning block has a different model, which can be adapted to different types of combined tools for calibration, greatly enhancing the versatility and flexibility of the calibration device.

[0049] (III) Technical effect of the calibration method of the combined tool:

[0050] 1. Efficient calibration: The combined tool is positioned and clamped by the calibration device, and then the moving distance of the height conversion plate is measured by the calibrator. The installation position of the center drill is quickly adjusted according to the measurement results, realizing an efficient and accurate calibration process. This method realizes the rapid calibration of the combined tool through simple steps, greatly improving the calibration efficiency and reducing the production preparation time.

[0051] 2. Ensure accuracy: Through repeated measurement and adjustment until the reading of the calibrator meets the requirements, the calibration accuracy of the combination tool is ensured. Due to the use of a high-precision calibration device, the calibrated combination tool is ensured to have a high degree of processing accuracy and stability. This method can ensure that the center drill position of the combination tool meets the expected accuracy requirements and improve the quality of the processed parts.

[0052] 3. Easy to implement: The calibration method has clear steps, simple operation, easy to master and repeat, does not require complex equipment and skills, is suitable for various production environments and operators, and provides reliable guarantee for the calibration of combined tools in mass production.

[0053] 4. Wide applicability: This method is applicable to various types of combined tools, improving calibration efficiency and processing accuracy. The calibration device used in this method has a simple structure and is easy to operate. It can be implemented without complex professional skills, reducing the calibration cost.

[0054] In summary, the present invention provides a comprehensive combination tool and its calibration device and method. Through the design of the combination tool structure and the precise calibration device, efficient and accurate calibration of the tool is achieved. The combination tool integrates a center drill and an end mill. Through the adjustment of the directional screw and the fixed-length stop bolt, the installation direction and extension length of the tool can be accurately controlled to adapt to different processing requirements. The calibration device utilizes a high-precision center hole standard block, a height conversion plate, a guide mechanism, and a calibrator. Through the precise matching of the clamping assembly and the positioning assembly, it realizes the rapid positioning and calibration of the combination tool. In addition, the calibration method is simple and intuitive. Through multiple adjustments and measurements, it is ensured that the calibration accuracy meets the requirements. The combination tool and its calibration device and calibration method of the present invention show significant technical effects in improving processing efficiency, ensuring processing accuracy, enhancing equipment versatility, and simplifying operating procedures. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] The drawings described herein are used to provide further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0056] Figure 1 It is a schematic diagram of the overall structure of the combined tool of the present invention;

[0057] Figure 2 This is a structural schematic diagram of the combined tool of the present invention, focusing on the distribution of cutting fluid nozzles;

[0058] Figure 3 A partial cross-sectional view of the combined tool of the present invention;

[0059] Figure 4It is a schematic diagram of the overall structure of the calibration device of the combined tool of the present invention;

[0060] Figure 5 It is an X-direction cross-sectional view of the calibration device of the combined tool of the present invention;

[0061] Figure 6 It is a Y-axis sectional view of the calibration device of the combined tool of the present invention.

[0062] The numbers in the figure are as follows:

[0063] 1. Tool handle; 11. Connecting part; 12. Mounting part; 13. Mounting hole; 14. Gap groove; 15. Mounting groove; 16. Directional screw; 17. Fixed-length stop bolt; 18. Cutting fluid nozzle;

[0064] 2. Center drill;

[0065] 3. Face milling cutter; 31. Positioning screw;

[0066] 4. Mounting base; 41. Bottom plate; 42. Top plate; 421. Center through hole; 43. Height setting rod;

[0067] 5. Measurement mechanism;

[0068] 51. Clamping assembly; 511. Thread replacement block; 512. Clamping plate; 513. Butterfly nut;

[0069] 52, positioning assembly; 521, positioning block; 5211, positioning groove; 522, positioning base; 523, spring plunger;

[0070] 53. Calibration components;

[0071] 531, center hole standard block; 5311, center calibration hole;

[0072] 532, height conversion board;

[0073] 533, guide mechanism; 5331, guide light rod; 5332, linear bearing; 5333, return spring;

[0074] 534. Calibrator;

[0075] 535, end face calibration pad;

[0076] 536. Mounting seat. DETAILED DESCRIPTION

[0077] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is by no means intended to limit the present invention and its application or use. The present invention can be implemented in other different forms and is not limited to the embodiments described herein.

[0078] It should be noted that those skilled in the art explicitly and implicitly understand that the embodiments described in the present invention can be combined with other embodiments without conflict. Unless otherwise defined, the technical terms or scientific terms involved in the present invention should have the common meanings understood by people with ordinary skills in the technical field to which the present invention belongs.

[0079] The words "a", "an", "a", "the" and the like involved in the present invention do not indicate quantity limitation and may indicate singular or plural. The terms "include", "comprises", "has" and any variations thereof involved in the present invention are intended to cover non-exclusive inclusions; the terms "first", "second", "third" and the like involved in the present invention are merely used to distinguish similar objects and do not represent a specific ordering of the objects.

[0080] This embodiment is based on the fact that in the machining industry, the end milling and drilling of cylindrical workpieces traditionally use two independent processes, which have the problems of low machining efficiency and poor positioning accuracy. In order to overcome these shortcomings, the industry has introduced a combination tool that integrates an end mill and a center drill. Although it improves machining efficiency and accuracy, it faces new challenges. The position of the milling cutter and the center drill in the combination tool needs to be precisely controlled, especially the height difference in the Z-axis direction, which is crucial to the machining quality, and conventional measuring tools and methods are difficult to achieve the required accuracy, resulting in difficulties in installation and adjustment. At the same time, the calibration of the combination tool also faces challenges. Traditional manual operations and simple measuring tools are inefficient, and it is difficult to ensure the accuracy and consistency of calibration, which urgently needs to be improved.

[0081] Based on the above problems, the present invention proposes a combined tool, such as Figures 1 to 3 As shown, the combined tool comprises a tool holder 1 , a center drill 2 and an end milling cutter 3 .

[0082] The tool handle 1 is provided with a connecting portion 11 and a mounting portion 12. The connecting portion 11 is used to connect to the machine tool turret so that the entire combined tool can be stably mounted on the machine tool. A mounting hole 13 is provided at the center of the tool handle 1, and the mounting hole 13 is used to mount the center drill 2. At the same time, a clearance groove 14 is provided in the circumference of the tool handle 1, and a mounting groove 15 is provided in the clearance groove 14 for mounting the end milling cutter 3. The mounting portion 12 is specifically used to mount the above-mentioned tool.

[0083] The center drill 2 is installed at the center position of the installation part 12 through the installation hole 13. Its main function is to process the center hole of the product to ensure the center position accuracy of the product.

[0084] The end milling cutter 3 is installed at the mounting groove 15 in the clearance groove 14 by means of a positioning screw 31, and the annular array is distributed around the center drill 2. The purpose of this design is to be able to mill the end face of the product at the same time during the processing, thereby improving the processing efficiency.

[0085] Furthermore, in order to adjust the installation direction of the center drill 2 and ensure that it matches the processing requirements of the product, a directional screw 16 is provided on the mounting portion 12. The directional screw 16 abuts against the center drill 2 through a threaded hole provided in the radial direction of the mounting portion 12, and the installation direction of the center drill 2 can be fine-tuned by adjusting the tightening degree of the directional screw 16.

[0086] In addition, in order to adjust the length of the center drill 2 extending out of the mounting hole 13 to meet the processing depth requirements of different products, a fixed-length stop bolt 17 is provided at the center of the tool handle 1. The fixed-length stop bolt 17 is threadedly connected to the mounting hole 13, and its end abuts against one end of the center drill 2. By rotating the fixed-length stop bolt 17, the extension length of the center drill 2 can be adjusted.

[0087] Finally, in order to improve the cooling and lubrication effect during the processing, four cutting fluid nozzles 18 are also provided on the tool handle 1. The cutting fluid nozzles 18 are arranged along the axial direction of the tool handle 1 and are connected to the water circuit of the machine tool. In this way, during the processing, the cutting fluid can be directly sprayed onto the tool and the workpiece through the cutting fluid nozzles 18, which plays a role in cooling and lubricating, and improves the processing quality and efficiency.

[0088] In addition, the present application also discloses a calibration device for a combined tool, such as Figures 4 to 6 As shown, it mainly includes a mounting base 4 and a measuring mechanism 5.

[0089] The mounting base 4 is composed of a bottom plate 41, a top plate 42, and a height-fixing rod 43 disposed therebetween. The bottom plate 41 and the top plate 42 are disposed in parallel and connected by a plurality of height-fixing rods 43 of the same length, ensuring that the top plate 42 remains parallel to the bottom plate 41 after installation, thereby providing a stable support platform for subsequent calibration work.

[0090] The measuring mechanism 5 includes a clamping assembly 51 , a positioning assembly 52 , a calibration assembly 53 and other parts, all of which are arranged on the upper part of the top plate 42 .

[0091] The clamping assembly 51 cooperates with the positioning assembly 52 to position and clamp the combined tool. Specifically, the clamping assembly 51 includes a thread replacement block 511, a clamping plate 512, and a butterfly nut 513. The thread replacement block 511 is mounted on the positioning block 521, and the clamping plate 512 is sleeved on the thread replacement block 511. By tightening the butterfly nut 513, the clamping plate 512 can be driven to press the combined tool downward to achieve a stable clamping effect.

[0092] The positioning assembly 52 includes a positioning base 522 and a positioning block 521. The positioning block 521 is installed in the middle of the positioning base 522 and is fixedly connected to the positioning base 522 through a spring plunger 523. The positioning base 522 is installed on the upper part of the top plate 42. A positioning groove 5211 is provided inside the positioning block 521, and its shape is adapted to the shape of the tool handle 1. Through the positioning block 521, the combined tool can be fixed and its center drill 2 can be aligned with the center hole standard block 531, providing accurate positioning for subsequent calibration work.

[0093] It is worth noting that the positioning block 521 can be provided in multiple pieces, and each positioning block 521 has a different model to adapt to the calibration requirements of different models of combination tools, thereby improving the versatility of the calibration device.

[0094] The calibration assembly 53 is the core part of the calibration device, and includes a center hole standard block 531 , a height conversion plate 532 , a guide mechanism 533 , a calibrator 534 and an end face calibration pad 535 .

[0095] The lower end of the center hole standard block 531 is fixedly connected to the height conversion plate 532, and the upper end extends into the center through hole 421 set in the center of the top plate 42, and can move up and down along the center through hole 421. In the initial state, the upper end surface of the center hole standard block 531 is in the same horizontal plane as the upper end surface of the top plate 42. A center calibration hole 5311 is set in the center of the upper end of the center hole standard block 531, which is adapted to the drill bit shape of the center drill 2 and is used to calibrate the center drill 2.

[0096] The height conversion plate 532 is connected to the bottom plate 41 through a guide mechanism 533 and can slide up and down along the guide mechanism 533. The guide mechanism 533 includes a guide light rod 5331, a linear bearing 5332 and a reset spring 5333. The guide light rod 5331 connects the bottom plate 41 and the height conversion plate 532, and the linear bearing 5332 is connected to the height conversion plate 532 and slides on the guide light rod 5331 to ensure the parallelism of the height conversion plate 532 during movement. The reset spring 5333 is sleeved on the guide light rod 5331 and is arranged between the bottom plate 41 and the linear bearing 5332, and is used to push the linear bearing 5332, the height conversion plate 532 and the center hole standard block 531 to reset.

[0097] The calibrator 534 is mounted on the top plate 42 via a mounting base 536 and is used to measure the moving distance of the height conversion plate 532, thereby indirectly measuring the calibration status of the combined tool.

[0098] The end face calibration pad 535 is installed on the top plate 42 and is used to contact the end face milling cutter 3 on the combined tool, establish the scraping plane of the combined tool, and ensure the calibration accuracy of the end face milling cutter 3.

[0099] When in use, first install the combined tool in the positioning block 521 of the positioning assembly 52 and clamp it by the clamping assembly 51. Then, measure the initial position of the height conversion plate 532 by the calibrator 534 and record the data. Next, insert the center drill 2 in the combined tool into the center calibration hole 5311 of the center hole standard block 531, and observe and adjust the position of the center drill 2 by the calibrator 534 until it is completely aligned with the center calibration hole 5311. At the same time, calibrate the end mill 3 with the end face calibration pad 535 to ensure that its scraping and milling plane is consistent with the preset value. Finally, measure the position of the height conversion plate 532 again by the calibrator 534, calculate the protruding length of the center drill 2, and adjust it as needed.

[0100] In summary, the calibration device for the combined tool of the present invention realizes accurate calibration of the combined tool through ingenious design. The combined tool can be stably fixed by the coordinated use of the clamping assembly and the positioning assembly; the precision and position of the center drill and the end face scraping cutter of the combined tool can be ensured to meet the processing requirements through the precise measurement and calibration of the calibration assembly. The calibration device has the advantages of simple structure, convenient operation, high calibration accuracy, etc., and is suitable for the calibration of various types of combined tools.

[0101] The present application also discloses a method for using the calibration device, which specifically includes the following steps:

[0102] First, ensure that the calibration device has been correctly installed and debugged, including the stability of the mounting base 4 and the normal function of each component of the measuring mechanism 5. Then, follow the steps below to calibrate the combined tool:

[0103] Step 1: Installation and clamping of combined tool

[0104] The combined tool to be calibrated is placed in the positioning block 521 of the positioning assembly 52. ​​The positioning groove 5211 inside the positioning block 521 is matched with the shape of the handle 1 of the combined tool, ensuring that the combined tool can be stably placed in the positioning block 521.

[0105] The combined tool is clamped using the clamping assembly 51. The specific operation is: rotating the butterfly nut 513, and the combined tool is tightly fixed on the positioning block 521 through the thread replacement block 511 and the clamping plate 512. Ensure that the clamping force is moderate to avoid deformation of the tool due to over-tightening or inaccurate calibration due to over-loosening.

[0106] Step 2: Align the center hole drill with the center hole standard block

[0107] Adjust the position of the combined tool so that the center hole drill 2 is aligned with the center calibration hole 5311 of the center hole standard block 531. At this time, the center hole drill 2 will be inserted into the center calibration hole 5311 and drive the height conversion plate 532 to slide downward along the guide mechanism 533.

[0108] The guide light rod 5331 and the linear bearing 5332 of the guide mechanism 533 ensure that the height conversion plate 532 maintains parallelism during the sliding process, and the reset spring 5333 is used to push the height conversion plate 532 to reset after the calibration is completed.

[0109] Step 3: Measure and adjust

[0110] The moving distance of the height conversion plate 532 is measured using a calibration gauge 534. This distance reflects the deviation of the center hole drill 2 from its ideal position.

[0111] The installation position of the center hole drill 2 on the calibrated combined tool is adjusted according to the measurement result of the calibrator 534. The extension length of the center hole drill 2 can be changed by adjusting the fixed length stop bolt 17 on the tool handle 1, or the installation direction of the center hole drill 2 can be changed by adjusting the directional screw 16.

[0112] Repeat the above measurement and adjustment steps until the reading of the calibrator 534 meets the preset calibration requirements, which usually means that the center hole drill 2 is fully aligned with the center calibration hole 5311 of the center hole standard block 531, and the moving distance of the height conversion plate 532 is within the allowable error range.

[0113] Step 4: Fix and complete calibration

[0114] When the reading of the calibrator 534 meets the requirements, use an appropriate tool (such as a screwdriver) to fix the center hole drill 2 on the calibrated combined tool to ensure that the center hole drill 2 will not loosen or change position during subsequent use.

[0115] After the calibration is completed, the clamping assembly 51 is released, the calibrated combined tool is taken out, and it is prepared for the next round of calibration or put into production.

[0116] In summary, this embodiment provides a simple and effective method for calibrating a combined tool, which realizes accurate calibration of the center hole drill in the combined tool by using the positioning component, clamping component, calibration component and other components in the calibration device. This method not only improves the accuracy and efficiency of calibration, but is also applicable to combined tools of different models and specifications, and has wide applicability and practicality.

[0117] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0118] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it; when the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A combined tool, characterized in that: include: A tool handle (1) is provided with a connecting portion (11) and a mounting portion (12), wherein the connecting portion (11) is connected to a machine tool tool holder, a mounting hole (13) is provided at the center of the tool handle (1), a clearance groove (14) is provided in the circumference thereof, and the mounting portion (12) is used for mounting a tool; A center drill (2) is installed at the center of the mounting portion (12) through the mounting hole (13) and is used to process the center hole of the product; The end milling cutter (3) is installed at the installation groove (15) set in the clearance groove (14) through a positioning screw (31), and the annular array is distributed around the center drill (2) for milling the end face of the product.

2. The combined tool according to claim 1, characterized in that: The mounting portion (12) is provided with a directional screw (16), and the directional screw (16) abuts against the center drill (2) through a threaded hole provided in the radial direction of the mounting portion (12), and is used to adjust the mounting direction of the center drill (2).

3. The combined tool according to claim 1, characterized in that: A fixed-length stop bolt (17) is arranged at the center of the tool handle (1), which is threadedly connected to the mounting hole (13) and has an end abutting against one end of the center drill (2) for adjusting the length of the center drill (2) extending out of the mounting hole (13).

4. The combined tool according to claim 1 or 3, characterized in that: The tool handle (1) is also provided with a cutting fluid nozzle (18), which is arranged to penetrate along the axial direction of the tool handle (1), with at least one cutting fluid nozzle (18) being provided and connected to a water channel of a machine tool.

5. A calibration device for a combined tool, characterized in that: It comprises a mounting base (4) and a measuring mechanism (5); The mounting base (4) comprises a bottom plate (41), a top plate (42), and a height-fixing rod (43) arranged on the bottom plate (41) and the top plate (42); the top plate (42) is arranged parallel to the bottom plate (41); The measuring mechanism (5) comprises a clamping assembly (51), a positioning assembly (52), and a calibration assembly (53) which are arranged on the upper part of the top plate (42); The clamping assembly (51) and the positioning assembly (52) cooperate with each other to position and clamp the combined tool so as to calibrate the combined tool; The calibration assembly (53) comprises a center hole standard block (531), a height conversion plate (532) and a guide mechanism (533) arranged between the top plate (42) and the bottom plate (41), and a calibration instrument (534); The height conversion plate (532) is connected to the bottom plate (41) via a guide mechanism (533) and can slide up and down along the guide mechanism (533); the height of the height conversion plate (532) is installed lower than the height of the top plate (42), and a gap is left between the height conversion plate (532) and the top plate (42) to form a measurement space; The lower end of the center hole standard block (531) is fixedly connected to the height conversion plate (532), and the upper end extends into the center through hole (421) provided in the center of the top plate (42), and can move up and down along the center through hole (421); in the initial state, the upper end surface of the center hole standard block (531) and the upper end surface of the top plate (42) are on the same horizontal plane; A center calibration hole (5311) for calibration is provided at the center of the upper end of the center standard block (531); the center calibration hole (5311) is adapted to the drill bit shape of the center drill (2); An end face calibration pad (535) is also provided on the top of the top plate (42). The end face calibration pad (535) is installed on the top plate (42) and is used to contact the end face scraping cutter on the combined tool to establish the scraping plane of the combined tool. The calibration instrument (534) is mounted on the top plate (42) via a mounting seat (536) and is used to measure the moving distance of the height conversion plate (532).

6. The calibration device for combined tools according to claim 5, characterized in that: The guide mechanism (533) comprises a guide light rod (5331) and a linear bearing (5332), wherein the guide light rod (5331) is connected to the base plate (41) and the height conversion plate (532), and the linear bearing (5332) is connected to the height conversion plate (532) and slides on the guide light rod (5331) to ensure the parallelism of the height conversion plate (532) during movement.

7. The calibration device for combined tools according to claim 6, characterized in that: The guide mechanism (533) further comprises a reset spring (5333), which is sleeved on the guide light rod (5331) and arranged between the base plate (41) and the linear bearing (5332), and is used to push the linear bearing (5332), the height conversion plate (532) and the center hole standard block (531) to reset.

8. The calibration device for combined tools according to claim 5, characterized in that: The clamping assembly (51) comprises a thread replacement block (511), a clamping plate (512) and a butterfly nut (513); the thread replacement block (511) is mounted on the positioning block (521); the clamping plate (512) is sleeved with the thread replacement block (511); by tightening the butterfly nut (513), the clamping plate (512) is driven to press the combined tool downward.

9. The calibration device for combined tools according to claim 5, characterized in that: The positioning assembly (52) comprises a positioning base (522) and a positioning block (521); the positioning block (521) is installed in the middle of the positioning base (522) and is fixedly connected to the positioning base (522) via a spring plunger (523); the positioning base (522) is installed on the upper part of the top plate (42); a positioning groove (5211) is arranged inside the positioning block (521); the shape of the positioning groove (5211) is adapted to the shape of the tool handle (1); the positioning block (521) is used to fix the combined tool and align its center hole drill (2) with the center hole standard block (531).

10. The calibration device for combined tools according to claim 9, characterized in that: The positioning blocks (521) are arranged in a plurality of pieces, and each positioning block (521) is of a different model to adapt to the calibration of combined tools of different models.

11. The calibration device for combined tools according to claim 5, characterized in that: The height-fixing rods (43) are provided in a plurality, and the plurality of height-fixing rods (43) have the same length and are distributed between the top plate (42) and the bottom plate (41) so as to keep the top plate (42) parallel to the bottom plate (41) after installation.

12. The calibration device for combined tools according to claim 8, characterized in that: The thread replacement block (511) is mounted on the positioning block (521), a clamping plate (512) is sleeved on the thread replacement block (511), a butterfly nut (513) is screwed on the threaded rod on the thread replacement block (511), and by tightening the butterfly nut (513), the clamping plate (512) can be driven to press the combined tool downward.

13. A method for calibrating a combined tool, using the combined tool calibration device according to any one of claims 5 to 12, characterized in that: The calibration method comprises the following steps: The combined tool is placed in the positioning block (521), and the combined tool is pressed by the clamping assembly (51); The center hole drill (2) of the combined tool contacts the center hole standard block (531) and drives the height conversion plate (532) to slide downward along the guide mechanism (533); The moving distance of the height conversion plate (532) is measured by a calibrator (534), and the installation position of the center hole drill (2) on the calibrated combined tool is adjusted according to the measurement result; Repeat the above steps until the reading of the calibrator (534) meets the requirements, fix the center hole drill (2) on the calibrated combined tool, and complete the calibration.

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