Double-spindle box body structure

Abstract

The utility model relates to the technical field of double spindles, and discloses a double-spindle box body structure which comprises a spindle box, a fixing piece, a driving assembly and a machining assembly, and the interior of the spindle box is in sliding fit with a guide block of the fixing piece through a guide groove to provide accurate installation. A main shaft hole and an auxiliary shaft hole are used for installing a first main shaft, a second main shaft, a movable groove of a driven shaft fixing piece and a main shaft auxiliary ring to form a rotating pair, stable rotation of the main shafts is guaranteed, in the driving assembly, a servo motor achieves constant-speed reverse rotation of the first main shaft and the second main shaft through a motor synchronous belt, a synchronous gear and a gear synchronous belt, and the machining stability is improved. Power is transmitted to the driven shaft through meshing of the transmission gear and the driven gear, a fixed machining part of the machining assembly is precisely in butt joint with positioning grooves in the front ends of the main shaft and the driven shaft through a fixing ring, when a machining cutter is installed in a fixing end, cutting can be conducted, symmetrical layout is adopted, a plurality of parts can be machined at the same time, the machining period is shortened, and the structure is convenient to maintain.

Description

Technical Field

[0001] This utility model relates to the field of dual-spindle technology, specifically a dual-spindle housing structure. Background Technology

[0002] In the field of modern machining, high-efficiency and high-precision machining equipment is a key element in enhancing the competitiveness of the manufacturing industry. As a core component of machining equipment, the dual-spindle housing structure can realize the simultaneous processing of multiple parts, effectively shortening the processing cycle. It plays an important role in industries such as automotive parts manufacturing and aerospace precision parts processing. With the continuous improvement of market requirements for product production efficiency and quality, the development of high-performance and high-reliability dual-spindle housing structures has become an inevitable choice to meet the needs of the rapid development of the manufacturing industry.

[0003] However, some existing dual-spindle housing structures have defects such as insufficient transmission accuracy and poor installation stability. The limitations of traditional structures in spindle layout and transmission methods make it easy for speed deviations to occur when the two spindles move synchronously, which in turn affects the consistency of machining dimensions. At the same time, the inaccuracy of its installation datum also causes uneven stress on the spindles during long-term operation, which aggravates bearing wear, reduces the service life of the equipment, and increases maintenance costs. In addition, the modularity of traditional structures is insufficient, making it difficult to replace key components, resulting in high equipment maintenance costs and long cycles, which seriously affects production progress. To address these issues, we propose a dual-spindle housing structure. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a dual spindle housing structure, which solves the aforementioned problems.

[0005] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a dual-spindle housing structure, comprising:

[0006] The spindle box contains a fixing component. The fixing component has a first spindle and a second spindle that are symmetrically distributed through it. The first spindle and the second spindle have the same structure. A transmission gear is sleeved on the first spindle and the second spindle. A driven shaft is provided on the outside of the first spindle and the second spindle. A driven gear is sleeved on the driven shaft. The driven gear meshes with the transmission gear. A cover plate is installed on the top of the spindle box.

[0007] A drive assembly is located at the rear end of the fixing component. The drive assembly includes a servo motor, a motor timing belt, two timing gears, and a gear timing belt. The two timing gears are respectively sleeved on the ends of the first spindle and the second spindle, and the motor timing belt is sleeved on the two timing gears.

[0008] A machining assembly is disposed at the front end of the spindle box. The machining assembly includes a fixed machining component, which consists of a fixed end and a fixed ring. The first spindle, the second spindle, and the driven shaft pass through the front end of the spindle box and are connected to the fixed ring.

[0009] Preferably, the spindle box has rectangular guide grooves at both ends inside, a pair of spindle holes at both the front and rear ends, and a pair of auxiliary spindle holes at the front end, with the auxiliary spindle holes located outside the spindle holes.

[0010] Preferably, the two ends of the fixing member are integrally formed with rectangular guide blocks, and the end faces of the guide blocks and guide grooves are provided with multiple threaded holes. The guide blocks are slidably inserted into the interior of the guide grooves, and bolts pass through the corresponding threaded holes for fixing.

[0011] Preferably, the bottom end of the fixing member has symmetrically distributed movable grooves, an auxiliary ring in the shape of an annulus is fixed on the cylindrical surface of the first main shaft, the first main shaft and the second main shaft are disposed inside the main shaft box, and the auxiliary ring is disposed inside the movable groove and rotates in cooperation with it.

[0012] Preferably, a synchronous gear is sleeved on the cylindrical surface at the end of the first spindle. The synchronous gear is located at the rear end of the fixing member. The first spindle and the second spindle are symmetrically distributed. The synchronous gears at the ends of the first spindle and the second spindle are connected by a gear synchronous belt drive.

[0013] Preferably, a servo motor is provided at the top of the fixing member, the output shaft of the servo motor passes through the rear end of the spindle box, and the end of the second spindle inside the spindle box passes through the rear end of the spindle box, wherein the end of the second spindle is connected to the output shaft of the servo motor through a motor synchronous belt drive.

[0014] Preferably, the front cylindrical surfaces of the first and second spindles are provided with four centrally symmetrical positioning grooves, wherein four centrally symmetrical fixing blocks are fixed inside the transmission gears, and the two transmission gears are sleeved on the first and second spindles. The fixing blocks are slidably engaged with the positioning grooves and are fixed by bolts corresponding to the fixing blocks and the interior of the positioning grooves.

[0015] Preferably, a driven gear is sleeved on the cylindrical surface of the driven shaft, and the driven shaft and the driven gear are disposed between the front end of the fixed member and the front end inside the spindle box. The front ends of the driven shaft and the first spindle pass through the front end of the spindle box through the secondary shaft hole and the main shaft hole, wherein the transmission gear and the driven gear mesh with each other.

[0016] Preferably, the fixed processing component includes a fixed end and a fixed ring. The fixed end is fixed to the front end of the fixed ring. The fixed ring has four centrally symmetrical fixed blocks II inside. The fixed ring is sleeved on the front end of the first spindle, the second spindle, and the driven shaft. The fixed blocks II cooperate with the positioning groove and are fixed by bolts from the front end of the fixed ring. The fixed processing component is set at the front end of the spindle box.

[0017] Compared with the prior art, the present invention provides a dual spindle housing structure, which has the following advantages:

[0018] 1. This dual-spindle housing structure enables high-efficiency machining. The first spindle, second spindle, and driven shaft are symmetrically arranged, allowing simultaneous machining of multiple parts, greatly shortening the machining cycle, significantly improving production efficiency, and ensuring stable operation. The spindle housing guide groove and the fixed component guide block slide together, providing a precise installation reference. The fixed component movable groove and the spindle auxiliary ring form a rotating pair, optimizing spindle stress, reducing bearing load, ensuring stable equipment operation, and facilitating maintenance. Key components can be replaced independently, reducing downtime and maintenance time and costs, making maintenance more convenient and efficient. Precise adaptation is achieved through servo motor closed-loop control, enabling precise adjustment of spindle speed to adapt to different material processing requirements. By adjusting the tension of the gear synchronous belt, transmission accuracy is further improved, ensuring quality. The synchronous movement of the two spindles is monitored in real time by the control system, ensuring consistent machining dimensions and effectively improving machining quality. When the machining tool is fixed inside the fixed end, after the servo motor starts, power is transmitted through the motor synchronous belt, synchronous gears, and other components, driving the spindle and driven shaft to rotate, achieving efficient, stable, and precise part machining. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the spindle box structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the fastener structure of this utility model;

[0024] Figure 6 This is a schematic diagram of the first main shaft structure of this utility model;

[0025] Figure 7 This is a schematic diagram of the structure of the fixed processing part of this utility model.

[0026] In the diagram: 1. Cover plate; 2. Spindle box; 3. Fixing component; 4. Servo motor; 5. Motor synchronous belt; 6. First spindle; 7. Second spindle; 8. Transmission gear; 9. Driven shaft; 10. Driven gear; 11. Fixed machining component; 12. Guide groove; 13. Secondary shaft hole; 14. Spindle hole; 15. Guide block; 16. Movable groove; 17. Fixed block one; 18. Positioning groove; 19. Auxiliary ring; 20. Synchronous gear; 21. Fixed block two; 22. Gear synchronous belt. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-7 A dual-spindle housing structure, comprising:

[0029] The spindle box 2 and the fixing component 3 are provided inside the spindle box 2. The fixing component 3 is provided inside the fixing component 3. The first spindle 6 and the second spindle 7 are symmetrically distributed through the fixing component 3. The first spindle 6 and the second spindle 7 have the same structure. The first spindle 6 and the second spindle 7 are fitted with transmission gears 8. The outer sides of the first spindle 6 and the second spindle 7 are respectively provided with driven shafts 9. The driven shafts 9 are fitted with driven gears 10. The driven gears 10 mesh with the transmission gears 8. The top of the spindle box 2 is equipped with a cover plate 1.

[0030] The drive assembly located at the rear end of the fixing component 3 includes a servo motor 4, a motor timing belt 5, two timing gears 20 and a gear timing belt 22. The two timing gears 20 are respectively sleeved on the ends of the first spindle 6 and the second spindle 7, and the motor timing belt 5 is sleeved on the two timing gears 20.

[0031] The machining assembly is located at the front end of the spindle box 2. The machining assembly includes a fixed machining component 11, which consists of a fixed end and a fixed ring. The first spindle 6, the second spindle 7, and the driven shaft 9 pass through the front end of the spindle box 2 and are connected to the fixed ring.

[0032] Furthermore, rectangular guide grooves 12 are provided at both ends of the spindle box 2. A pair of spindle holes 14 are provided at both the front and rear ends of the spindle box 2. A pair of auxiliary spindle holes 13 are provided at the front end of the spindle box 2, and the auxiliary spindle holes 13 are located outside the spindle holes 14. This provides a guiding reference for the installation of the fixing component 3, and also provides a channel for the first spindle 6, the second spindle 7 and the driven shaft 9 to pass through the box, ensuring the accuracy of the structural installation.

[0033] Furthermore, the two ends of the fastener 3 are integrally formed with rectangular guide blocks 15. The end faces of the guide blocks 15 and the guide groove 12 are provided with multiple threaded holes. The guide blocks 15 are slidably inserted into the inside of the guide groove 12, and the bolts pass through the corresponding threaded holes for fixing, so as to achieve precise positioning and firm installation of the fastener 3 in the spindle box 2, and ensure the stability of the overall structure.

[0034] Furthermore, the bottom end of the fixing member 3 is provided with symmetrically distributed movable grooves 16, and an auxiliary ring 19 in the shape of an annulus is fixed on the cylindrical surface of the first spindle 6. The first spindle 6 and the second spindle 7 are set inside the spindle box 2, and the auxiliary ring 19 is set inside the movable groove 16 and rotates to cooperate, thereby optimizing the stress state of the spindle, reducing the bearing load, and improving the stability and flexibility of the spindle rotation.

[0035] Furthermore, a synchronous gear 20 is sleeved on the cylindrical surface at the end of the first spindle 6. The synchronous gear 20 is located at the rear end of the fixed part 3. The first spindle 6 and the second spindle 7 are symmetrically distributed. The synchronous gears 20 at the ends of the first spindle 6 and the second spindle 7 are connected by a gear synchronous belt 22, so that the two spindles can rotate in opposite directions at the same speed, improve machining stability, and ensure the synchronization of the machining process.

[0036] Furthermore, a servo motor 4 is provided at the top of the fixing member 3. The output shaft of the servo motor 4 passes through the rear end of the spindle box 2. The end of the second spindle 7 inside the spindle box 2 passes through the rear end of the spindle box 2. The end of the second spindle 7 is connected to the output shaft of the servo motor 4 through the motor synchronous belt 5, providing a power source for the entire transmission system and ensuring the effective transmission of power.

[0037] Furthermore, the front cylindrical surfaces of the first spindle 6 and the second spindle 7 are provided with four centrally symmetrical positioning grooves 18. The transmission gear 8 is fixed with four centrally symmetrical fixing blocks 17. The two transmission gears 8 are sleeved on the first spindle 6 and the second spindle 7. The fixing blocks 17 and the positioning grooves 18 are slidably engaged, and bolts are used to fix the fixing blocks 17 and the positioning grooves 18, so as to realize the reliable connection between the transmission gear 8 and the spindle and ensure that the power is efficiently distributed to the transmission gear 8.

[0038] Furthermore, a driven gear 10 is sleeved on the cylindrical surface of the driven shaft 9, and the driven shaft 9 and the driven gear 10 are arranged between the front end of the fixing member 3 and the front end inside the spindle box 2. The driven shaft 9 and the front end of the first spindle 6 pass through the front end of the spindle box 2 through the secondary shaft hole 13 and the main shaft hole 14. The transmission gear 8 and the driven gear 10 mesh to transmit the spindle power to the driven shaft 9, enhance the rigidity of the machining assembly, and realize multi-axis collaborative work.

[0039] Furthermore, the fixed machining component 11 includes a fixed end and a fixed ring. The fixed end is fixed to the front end of the fixed ring. The fixed ring has four centrally symmetrical fixed blocks 21 inside. The fixed ring is sleeved on the front end of the first spindle 6, the second spindle 7 and the driven shaft 9. The fixed blocks 21 are engaged with the positioning groove 18 and are fixed by bolts from the front end of the fixed ring. The fixed machining component 11 is set at the front end of the spindle box 2 to form a rigid connection, so that the spindle rotation power is converted into tool cutting motion to realize the machining of parts.

[0040] Structural Description:

[0041] Working Principle: Based on the spindle box 2 as the basic frame, the internal guide groove 12 and the guide block 15 of the fixing part 3 slide together to form a precisely adjustable installation reference. The front end of the spindle box has a secondary spindle hole 13 and a main spindle hole 14, used to install the first main spindle 6, the second main spindle 7, and the driven shaft 9, respectively. The movable groove 16 of the fixing part 3 and the main spindle auxiliary ring 19 form a rotating pair, ensuring stable rotation of the main spindle and machining of multiple parts. Power transmission begins with the servo motor 4, whose output shaft drives the synchronous gear 20 at the end of the second main spindle 7 via the motor synchronous belt 5. Since the synchronous gears 20 of the first main spindle 6 and the second main spindle 7 are connected by a gear synchronous belt 22, the two main spindles achieve equal speed and opposite rotation, improving machining stability. The rotation of the main spindle is transmitted to the driven shaft 9 through the meshing of the transmission gear 8 and the driven gear 10. The transmission gear 8 is fixedly connected through the keyway of the fixing block 17 and the main spindle positioning groove 18, ensuring efficient power distribution. The synchronous rotation of the driven shaft 9... The rigidity of the machining components is enhanced by the fixed machining part 11, which is precisely connected to the positioning groove 18 at the front end of the spindle and driven shaft through the fixing block 21 of the fixing ring, forming a rigid connection. When the machining tool is installed inside the fixed end, the rotation of the spindle system is directly converted into the cutting motion of the tool. The symmetrical layout of the first spindle 6, the second spindle 7 and the driven shaft 9 allows multiple parts to be machined at the same time, which greatly shortens the machining cycle. The sliding fit between the guide groove 12 and the guide block 15 not only provides the installation reference, but the fit between the movable groove 16 and the auxiliary ring 19 optimizes the stress state of the spindle, reduces the bearing load, and allows key components to be replaced independently, improving the maintainability of the equipment. The closed-loop control of the servo motor 4 ensures that the spindle speed is precisely adjustable to adapt to the machining requirements of different materials. By adjusting the tension of the gear synchronous belt 22, the transmission accuracy can be further optimized. During the machining process, the synchronous movement of the two spindles is monitored in real time by the control system to ensure the consistency of the machining dimensions.

[0042] 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 twin-spindle housing structure characterized by comprising: include: The spindle box (2) and the fixing part (3) are provided inside the spindle box (2). The fixing part (3) is provided with a first spindle (6) and a second spindle (7) that are symmetrically distributed through the fixing part (3). The first spindle (6) and the second spindle (7) have the same structure. The first spindle (6) and the second spindle (7) are fitted with transmission gears (8). The outer sides of the first spindle (6) and the second spindle (7) are respectively provided with driven shafts (9). The driven shafts (9) are fitted with driven gears (10). The driven gears (10) mesh with the transmission gears (8). The top of the spindle box (2) is equipped with a cover plate (1). The drive assembly located at the rear end of the fixing member (3) includes a servo motor (4), a motor timing belt (5), two timing gears (20) and a gear timing belt (22). The two timing gears (20) are respectively sleeved on the ends of the first spindle (6) and the second spindle (7), and the motor timing belt (5) is sleeved on the two timing gears (20). A machining assembly is provided at the front end of the spindle box (2). The machining assembly includes a fixed machining component (11), which consists of a fixed end and a fixed ring. The first spindle (6), the second spindle (7), and the driven shaft (9) pass through the front end of the spindle box (2) and are connected to the fixed ring.

2. A twin-spindle housing structure according to claim 1, characterized in that The spindle box (2) has rectangular guide grooves (12) at both ends inside. The front and rear ends of the spindle box (2) are provided with a pair of spindle holes (14). The front end of the spindle box (2) is provided with a pair of auxiliary spindle holes (13), and the auxiliary spindle holes (13) are located outside the spindle holes (14).

3. A twin-spindle housing structure according to claim 2, wherein The two ends of the fixing member (3) are integrally formed with rectangular guide blocks (15). The end faces of the guide blocks (15) and the guide groove (12) are provided with multiple threaded holes. The guide blocks (15) are slidably inserted into the inside of the guide groove (12), and the bolts pass through the corresponding threaded holes for fixing.

4. A twin-spindle housing structure according to claim 1, wherein The bottom end of the fixing member (3) is provided with symmetrically distributed movable grooves (16). An auxiliary ring (19) in the shape of an annulus is fixed on the cylindrical surface of the first main shaft (6). The first main shaft (6) and the second main shaft (7) are located inside the main shaft box (2), and the auxiliary ring (19) is located inside the movable groove (16) and rotates in cooperation.

5. A twin-spindle housing structure according to claim 4, wherein A synchronous gear (20) is sleeved on the cylindrical surface at the end of the first spindle (6). The synchronous gear (20) is located at the rear end of the fixing member (3). The first spindle (6) and the second spindle (7) are symmetrically distributed. The synchronous gears (20) at the ends of the first spindle (6) and the second spindle (7) are connected by a gear synchronous belt (22).

6. The dual-spindle housing structure according to claim 5, characterized in that, The top of the fixing member (3) is provided with a servo motor (4), the output shaft of the servo motor (4) passes through the rear end of the spindle box (2), and the end of the second spindle (7) inside the spindle box (2) passes through the rear end of the spindle box (2). The end of the second spindle (7) is connected to the output shaft of the servo motor (4) by a motor synchronous belt (5).

7. The dual-spindle housing structure according to claim 1, characterized in that, The first spindle (6) and the second spindle (7) have four central axis symmetrical positioning grooves (18) on their front cylindrical surfaces. The transmission gears (8) are fixed with four central axis symmetrical fixing blocks (17). The two transmission gears (8) are sleeved on the first spindle (6) and the second spindle (7). The fixing blocks (17) slide with the positioning grooves (18) and are fixed by bolts corresponding to the fixing blocks (17) and the positioning grooves (18).

8. A dual-spindle housing structure according to claim 7, characterized in that, A driven gear (10) is sleeved on the cylindrical surface of the driven shaft (9), and the driven shaft (9) and the driven gear (10) are arranged between the front end of the fixing member (3) and the front end inside the spindle box (2). The front ends of the driven shaft (9) and the first spindle (6) pass through the front end of the spindle box (2) through the secondary shaft hole (13) and the main shaft hole (14), wherein the transmission gear (8) and the driven gear (10) mesh with each other.

9. A dual-spindle housing structure according to claim 8, characterized in that, The fixed processing component (11) includes a fixed end and a fixed ring. The fixed end is fixed to the front end of the fixed ring. The fixed ring has four central axis symmetrical fixed blocks (21) inside. The fixed ring is sleeved on the front end of the first spindle (6), the second spindle (7) and the driven shaft (9). The fixed blocks (21) are engaged with the positioning groove (18) and fixed by bolts from the front end of the fixed ring. The fixed processing component (11) is set at the front end of the spindle box (2).

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