A four-spindle headstock

Abstract

The utility model relates to numerical control machine tool accessory technical field, concretely is a four -axis head box, including head box body and connecting flange, the both ends of connecting flange are fixedly connected with processing equipment and the upper mounting plate of head box body respectively, head box body includes upper mounting plate, lower mounting plate, head box main shaft, four branch main shaft, head box tool holder and installs tool handle, head box main shaft rotatably installs in the center position of upper mounting plate and lower mounting plate, four branch main shaft rotatably installs between upper mounting plate and lower mounting plate, one end of installing tool handle is fixedly connected with equipment main shaft of processing equipment, and the other end is fixedly connected with head box main shaft, head box tool holder is installed on branch main shaft, head box main shaft and four branch main shaft are connected through transmission system respectively. The four -axis head box can improve processing efficiency, realize stable power transmission, and the structure is reasonable and convenient to install and is accurate in positioning, reduces cost, shortens delivery cycle, enhances enterprise competitiveness under the condition of not replacing traditional equipment massively.

Description

Technical Field

[0001] This utility model relates to the field of CNC machine tool accessories technology, specifically to a four-axis headstock. Background Technology

[0002] In the machining industry, processing costs and delivery cycles have a crucial impact on a company's competitiveness. Processing costs typically account for 60% to 70% of the total manufacturing cost, while the length of the customer delivery cycle is a key indicator of a company's ability to handle business. In today's fiercely competitive market environment, the single-piece production model can no longer meet industry demands. Low cost and fast delivery have become challenges that companies must address, and the traditional approach of relying on time to "compete" for production capacity is gradually being phased out.

[0003] In recent years, numerous domestic and international machine tool accessory manufacturers have focused on developing and launching various machine tool accessories to address the limited machining space of general-purpose machine tools. However, these technologies primarily concentrate on solving machining difficulties in hard-to-machine areas and enhancing machine tool functionality, with limited breakthroughs in improving machining efficiency through machine tool accessories. The main reasons for this situation are: high equipment replacement costs, a long history of traditional equipment manufacturing methods, and the fact that equipment constitutes a large proportion of a company's fixed assets. Even if new equipment offers significant advantages, replacing existing equipment on a large scale requires substantial capital investment. Given the current highly competitive machining market, companies are already saturated with existing equipment and are unlikely to invest heavily in large-scale equipment replacements.

[0004] Therefore, developing a four-axis headbox with a more reasonable structure, more stable performance, and more complete functions is of great practical significance. Summary of the Invention

[0005] To address the aforementioned issues, this invention provides a four-axis headbox that improves processing efficiency, achieves stable power transmission, has a reasonable structure for easy installation, and provides precise positioning. Without significantly replacing traditional equipment, it reduces costs, shortens delivery cycles, and enhances enterprise competitiveness.

[0006] The technical solution of this utility model is as follows: A four-axis headstock includes a headstock body and a connecting flange; The two ends of the connecting flange are fixedly connected to the processing equipment and the upper mounting plate of the head box body, respectively, for installing the head box body onto the processing equipment; The headbox body includes an upper mounting plate, a lower mounting plate, a headbox spindle, four branch spindles, a headbox tool holder, and a tool holder. The upper mounting plate and the lower mounting plate are set parallel to each other. The headstock spindle is rotatably mounted at the center of the upper and lower mounting plates; Four branch spindles are rotatably mounted between the upper and lower mounting plates and are evenly distributed on the same circumference centered on the headstock spindle. One end of the tool holder is fixedly connected to the spindle of the machining equipment, and the other end is fixedly connected to the headstock spindle, which is used to transmit the power of the machine spindle to the headstock spindle; The headstock tool holder is mounted on the branch spindle for mounting cutting tools; The headstock spindle is connected to the four branch spindles via a transmission system.

[0007] The transmission system includes a drive gear mounted on the headstock main shaft and driven gears mounted on the four branch main shafts respectively. The drive gear and driven gear mesh with each other to realize the power transmission from the headstock main shaft to the branch main shafts.

[0008] The head box body also includes a protective cover, which is fixedly connected to the upper mounting plate and the lower mounting plate and encloses the upper mounting plate and the lower mounting plate.

[0009] The headstock spindle or branch spindle is mounted on the upper and lower mounting plates via bearings.

[0010] Locating pins are installed at both ends of the connecting flange between the processing equipment and the upper mounting plate of the head box body.

[0011] The four-axis headbox also includes a tool setting device, which includes a support frame and tool setting tool holders. Four tool setting tool holders corresponding to the positions of the headbox tool holders are fixedly installed on the support frame.

[0012] The support frame consists of a base plate, support columns, and a support top plate. The base plate and the support top plate are arranged in parallel, and the support columns are fixedly installed between the base plate and the support top plate.

[0013] The protective cover has multiple heat dissipation holes.

[0014] The ventilation holes are evenly distributed on the side of the protective cover.

[0015] Dust filters are installed at the heat dissipation holes.

[0016] The beneficial effects of this utility model are as follows: 1. The present invention discloses a four-axis headbox, which sets a headbox spindle and four branch spindles, and the four branch spindles are evenly distributed on the same circumference centered on the headbox spindle. This enables multiple tools to process simultaneously. Compared with the traditional single-tool processing mode, it greatly increases the processing volume per unit time, effectively improves processing efficiency, and helps to shorten the customer delivery cycle.

[0017] 2. The present invention discloses a four-axis headbox, wherein the headbox main shaft and four branch main shafts are connected by a transmission system. If the driving gear and driven gear mesh with each other, the power of the main shaft can be stably transmitted to the branch main shafts, ensuring that each branch main shaft drives the tool to operate normally, ensuring the stability and reliability of the machining process, and thus improving the machining quality.

[0018] 3. The present invention discloses a four-axis headbox, wherein the two ends of the connecting flange of the four-axis headbox are fixedly connected to the processing equipment and the upper mounting plate of the headbox body respectively, so as to facilitate the installation of the headbox body onto the processing equipment; the upper mounting plate and the lower mounting plate are arranged in parallel and opposite to each other, and the headbox main shaft and four branch main shafts are rotatably installed therebetween. The overall structure is reasonably laid out, which facilitates the installation, debugging and maintenance of each component.

[0019] 4. The present invention discloses a four-axis headbox, wherein the headbox body is provided with a protective cover and is fixedly connected to the upper and lower mounting plates to enclose it, which can effectively prevent chips, coolant and other splashes during the processing, protect the safety of operators, reduce the interference and damage of external factors to the internal components of the headbox, and extend the service life of the equipment.

[0020] 5. The present invention discloses a four-axis headbox, wherein the protective cover of the four-axis headbox is provided with multiple heat dissipation holes, which are evenly distributed on the side. Some of the heat dissipation holes are also equipped with dust filters, which can not only ensure that the heat generated inside the headbox is dissipated in time to avoid affecting the performance and accuracy of the equipment due to excessive temperature, but also prevent dust and other impurities from entering the headbox, further protecting the internal components.

[0021] 6. The present invention discloses a four-axis headbox, wherein positioning pins are respectively installed between the two ends of the connecting flange of the four-axis headbox and the upper mounting plate of the processing equipment and the headbox body, which helps to achieve precise positioning during installation, ensures accurate connection between the headbox and the processing equipment, improves installation quality and stability, and reduces processing errors caused by installation deviations.

[0022] 7. The present invention discloses a four-axis headbox, which is equipped with a tool setting device. Four tool setting plates corresponding to the tool holder positions of the headbox are fixedly installed on its support frame, which facilitates precise tool setting before machining, ensures accurate relative positions between the tool and the workpiece, improves machining accuracy, reduces scrap rate, and lowers machining costs.

[0023] 8. The present invention discloses a four-axis headbox, which can improve processing efficiency by adding the headbox without replacing a large amount of the original traditional equipment. It solves the problem that enterprises are unwilling to replace equipment on a large scale due to high equipment replacement costs, and provides enterprises with a low-cost and high-efficiency processing solution, which helps to enhance the competitiveness of enterprises in the market. Attached Figure Description

[0024] The advantages and solutions of this application will become clear to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this invention.

[0025] In the attached diagram: Figure 1 This is a three-dimensional structural diagram of a four-axis headbox according to an embodiment of the present utility model; Figure 2 This is a three-dimensional exploded view of a four-axis head box according to an embodiment of the present utility model; Figure 3 This is a three-dimensional structural diagram of the headbox body of a four-axis headbox according to an embodiment of the present utility model after assembly (excluding the protective cover); Figure 4 This is a three-dimensional structural diagram of a four-axis headbox connection flange installed on the main shaft of the equipment according to an embodiment of the present utility model. Figure 5 This is a three-dimensional structural diagram of a four-axis headbox connection flange after it is installed on the main shaft of the equipment, according to an embodiment of the present utility model. Figure 6 This is a three-dimensional structural diagram of the headbox body of a four-axis headbox according to an embodiment of the present utility model, when it is installed on the connecting flange. Figure 7 This is a three-dimensional structural diagram of the headbox body of a four-axis headbox according to an embodiment of the present invention, after it is installed on the connecting flange; Figure 8 This is a three-dimensional structural diagram of a four-axis headbox and tool setting device according to an embodiment of the present utility model; Figure 9 This is a three-dimensional structural diagram of a four-axis headbox in use according to an embodiment of the present utility model; Figure 10 This is a three-dimensional structural schematic diagram of a tool setting device for a four-axis headbox according to an embodiment of the present utility model; The components represented by the various reference numerals in the diagram are: This utility model comprises: 1. Headbox body; 11. Protective cover; 12. Tool holder; 13. Upper mounting plate; 14. Lower mounting plate; 15. Branch spindle; 16. Headbox tool holder; 17. Headbox spindle; 18. Drive gear; 19. Driven gear; 110. Bearing; 120. Positioning pin; 2. Connecting flange; 3. Equipment spindle; 4. Tool setting plate device; 41. Base plate; 42. Support column; 43. Support upper plate; 44. Tool setting plate tool holder. Detailed Implementation

[0026] This four-axis headstock is a general-purpose machine tool accessory used in CNC machine tool spindles, such as... Figure 1 and Figure 2 As shown, it mainly consists of connecting flange 2, headbox body 1, tool setting device 4 and other accessories, which can realize the function of machine tool spindle 1 to 4, greatly improving processing efficiency.

[0027] The two ends of the connecting flange 2 are fixedly connected to the processing equipment and the upper mounting plate 13 of the head box body 1 by means of bolts or other means, and are used to install the head box body 1 onto the processing equipment. Locating pins 120 are installed between the two ends of the connecting flange 2 and the processing equipment and the upper mounting plate 13 of the head box body 1 to ensure the accuracy of installation.

[0028] like Figures 1 to 3 As shown, the headbox body 1 includes an upper mounting plate 13, a lower mounting plate 14, a headbox spindle 17, four branch spindles 15, a headbox tool holder 16, and a tool holder 12. The upper mounting plate 13 and the lower mounting plate 14 are arranged parallel to each other. The headbox spindle 17 is rotatably mounted at the center of the upper mounting plate 13 and the lower mounting plate 14. The four branch spindles 15 are rotatably mounted between the upper mounting plate 13 and the lower mounting plate 14 and are evenly distributed on the same circumference centered on the headbox spindle 17. The headbox tool holder 16 is mounted on the branch spindles 15 and is used to mount the tool.

[0029] Specifically, the headstock spindle 17 or the branch spindle 15 is mounted on the upper mounting plate 13 and the lower mounting plate 14 via bearings 110.

[0030] One end of the tool holder 12 is fixedly connected to the spindle 3 of the processing equipment, and the other end is fixedly connected to the headstock spindle 17, for transmitting the power of the spindle to the headstock spindle. The model of the tool holder 12 must match the model of the spindle 3 of the processing equipment. In a specific embodiment, the inner hole of the spindle 3 is BT50 type, and accordingly, the tool holder 12 is selected as BT50 type tool holder.

[0031] The headstock main shaft 17 is connected to the four branch main shafts 15 through a transmission system. The transmission system includes a drive gear 18 mounted on the headstock main shaft 17 and driven gears 19 mounted on the four branch main shafts 15 respectively. The drive gear 18 and driven gears 19 mesh with each other to realize the power transmission from the headstock main shaft 17 to the branch main shafts 15.

[0032] The head box body 1 also includes a protective cover 11, which is fixedly connected to the upper mounting plate 13 and the lower mounting plate 14 and encloses the upper mounting plate 13 and the lower mounting plate 14. The protective cover 11 is provided with multiple heat dissipation holes, which are evenly distributed on the side of the protective cover 11, and dust filters are installed at the heat dissipation holes.

[0033] A headstock tool holder 16 is fixedly installed on the branch spindle 15. Preferably, each headstock tool holder 16 adopts an internal hydraulic tool locking mechanism. This mechanism can ensure that no rotational torque is generated during the tool locking process. Only one screw needs to be tightened to complete the tool locking action, and ensure that the tool will not have any axial movement during the tool locking process, thereby ensuring the requirement that the four tools are of equal length.

[0034] like Figure 8 and Figure 10 As shown, the tool setting device 4 includes a support frame and tool setting plate holders 44. Four tool setting plate holders 44, corresponding to the positions of the headstock tool holders 16, are fixedly installed on the support frame. The support frame consists of a base plate 41, a support column 42, and a support upper plate 43. The base plate 41 and the support upper plate 43 are arranged in parallel, and the support column 42 is fixedly arranged between the base plate 41 and the support upper plate 43. When this mechanism is in use, four tools of the same model to be used are pre-loaded into the tool setting device, and the tools are secured to the tool setting plate using a hydraulic clamping device. At this time, the tip lengths of the four tools are all on the same plane. When the four-axis headstock simultaneously grips and clamps the four tools, there will be no phenomenon of different initial tip lengths.

[0035] Please refer to Figures 1 to 10 The working process of this four-axis headstock is as follows: Fix the connecting flange 2 to the end face of the machine tool spindle 3 with screws, and straighten the two locating pins 120 on the flange end face to be parallel to the X-axis of the machine tool; Align the drive port of the four-axis headbox (the connection between the headbox spindle 17 and the mounting tool holder 12) with the machine tool spindle hole, adjust the headbox positioning pin hole to align with the positioning pin on the mounting flange, pre-install the mounting screws, tighten the headbox and lock all screws through the machine tool drawbar mechanism; Install the tool setting device 4 on the machine tool worktable and straighten and align it. Establish the tool setting device installation coordinate values ​​through the headstock spindle 17. After confirmation, move the headstock spindle away from the tool setting device. Insert four identical cutting tools into the locking holes of the tool setting device 4 and clamp them. Start the spindle head box according to the tool setting coordinates to align the four cutting tools. Lower the four branch spindles 15, insert the four cutting tools into the appropriate positions, and lock the cutting tools on each axis. Loosen the four locking hole screws on the tool setting plate, raise the machine tool spindle, and ensure that the four cutting tools reach a safe height. The accessory connects to the machine tool spindle via the main drive interface (where the tool holder 12 connects to the machine spindle 3), driving the gear set (drive gear 18 and driven gear 19) inside the headstock. The gear set ensures that the speed and torque of the four branch spindles 15 meet the machining requirements through the gear ratio. With the rotation of the machine tool spindle, the four branch spindles 15 participate in machining simultaneously. The machine tool only needs to run the machining program according to the original single-axis machining method to complete the machining of a single part while simultaneously machining the other three parts, achieving the effect of one action producing four outputs. The machining program can be called to start the simultaneous machining of four parts.

[0036] Compared to dedicated machine modifications, this four-axis headbox is significantly cheaper. Its processing range and spindle count are customizable; users simply need to customize different headbox types based on product size ranges to achieve 100% adaptability to various machine tools and products without altering any existing equipment structure. Simultaneously, it doubles traditional processing efficiency, requiring no special processes or procedures. For every hour the existing equipment takes to process, four finished products can be produced simultaneously. Installation and disassembly are convenient, adapting to various equipment spindle ports; quick loading and unloading are achieved via mounting flanges, meeting the needs of various processing conditions. Tool loading and unloading are easy, with stable and reliable tool clamping, ensuring that all four simultaneously produced parts meet processing requirements.

Claims

1. A four-axis headstock, characterized in that, Includes the head box body (1) and the connecting flange (2); The two ends of the connecting flange (2) are fixedly connected to the upper mounting plate (13) of the processing equipment and the head box body (1) respectively, for installing the head box body (1) onto the processing equipment; The headbox body (1) includes an upper mounting plate (13), a lower mounting plate (14), a headbox spindle (17), four branch spindles (15), a headbox tool holder (16), and a tool holder (12). The upper mounting plate (13) and the lower mounting plate (14) are set parallel to each other; The headstock spindle (17) is rotatably mounted at the center of the upper mounting plate (13) and the lower mounting plate (14); Four branch spindles (15) are rotatably mounted between the upper mounting plate (13) and the lower mounting plate (14), and are evenly distributed on the same circumference centered on the headstock spindle (17); One end of the tool holder (12) is fixedly connected to the spindle (3) of the processing equipment, and the other end is fixedly connected to the headstock spindle (17) to transmit the power of the equipment spindle to the headstock spindle; The headstock tool holder (16) is mounted on the branch spindle (15) for mounting tools; The headstock spindle (17) and the four branch spindles (15) are connected by a transmission system.

2. A four-axis headstock according to claim 1, characterized in that, The transmission system includes a drive gear (18) mounted on the headstock main shaft (17) and driven gears (19) mounted on four branch main shafts (15) respectively. The drive gear (18) and driven gears (19) mesh with each other to realize the power transmission from the headstock main shaft (17) to the branch main shafts (15).

3. A four-axis headstock according to claim 1, characterized in that, The head box body (1) also includes a protective cover (11), which is fixedly connected to the upper mounting plate (13) and the lower mounting plate (14) and encloses the upper mounting plate (13) and the lower mounting plate (14).

4. A four-axis headstock according to claim 1, characterized in that, The headstock spindle (17) or branch spindle (15) is mounted on the upper mounting plate (13) and the lower mounting plate (14) via bearings (110).

5. A four-axis headstock according to claim 1, characterized in that, Locating pins (120) are installed between the two ends of the connecting flange (2) and the upper mounting plate (13) of the processing equipment and the head box body (1).

6. A four-axis headstock according to claim 1, characterized in that, It also includes a blade setting device (4), which includes a support frame and blade setting holders (44). Four blade setting holders (44) corresponding to the positions of the head box blade holders (16) are fixedly installed on the support frame.

7. A four-axis headstock according to claim 6, characterized in that, The support frame consists of a base plate (41), a support column (42), and a support upper plate (43). The base plate (41) and the support upper plate (43) are arranged in parallel, and the support column (42) is fixedly arranged between the base plate (41) and the support upper plate (43).

8. A four-axis headstock according to claim 3, characterized in that, The protective cover (11) is provided with multiple heat dissipation holes.

9. A four-axis headstock according to claim 8, characterized in that, The heat dissipation holes are evenly distributed on the side of the protective cover (11).

10. A four-axis headstock according to claim 8, characterized in that, Dust filters are installed at the heat dissipation holes.

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