A synchronous machining device for upper and lower spindles

Abstract

The utility model discloses a kind of upper and lower spindle synchronous processing devices, by with upper drilling shaft and lower drilling shaft coaxial opposite arrangement on the upper and lower sides of workpiece, and be configured as the innovative structure of independent lifting and synchronous motion, realize the double-sided synchronous drilling processing of workpiece.The design significantly improves processing efficiency, so that single clamping can complete the accurate forming of workpiece double-sided hole system, effectively shorten production cycle;Its coaxial layout ensures the height consistency of upper and lower drilling position, is favorable to guarantee aperture accuracy and hole position symmetry;The circumferential side setting scheme of disc tool changer assembly, cooperate with the drilling shaft mechanism of independent lifting, both facilitate quick tool replacement to adapt to diversified processing needs, and simplify equipment maintenance and operation process, enhance the flexible production capacity of equipment;Overall structure integration degree is high, space utilization is excellent, especially suitable for the industrialized production scene needing double-sided synchronous precision drilling, can effectively reduce manual intervention frequency, improve processing quality stability.

Description

Technical Field

[0001] This utility model relates to the field of sheet metal processing equipment technology, and in particular to a synchronous processing device for upper and lower spindles. Background Technology

[0002] In modern machinery manufacturing, especially in precision machining of complex parts, efficient, precise, and highly flexible automated machining equipment has become a key factor in improving production efficiency and product quality. With the increasing demands of industry, higher requirements are being placed on solutions capable of multi-dimensional, integrated machining. Particularly in the machining of through holes in sheet metal workpieces, traditional single-direction drilling (e.g., only from top or bottom) often faces numerous limitations: Firstly, to complete symmetrical hole machining on both sides of the workpiece, manual workpiece flipping or additional positioning fixtures are required for secondary clamping. This significantly increases operation time, reduces production efficiency, and may introduce cumulative errors due to multiple clamping operations, thus affecting the dimensional accuracy and positional accuracy of the final product. Secondly, while some existing machining devices employing dual-axis structures have alleviated these problems to some extent, they generally suffer from poor upper and lower spindle linkage performance and insufficient independence of axis movement, making it difficult to meet the synchronous and precise control requirements under diverse working conditions. Especially when handling workpieces with varying thicknesses and materials, it is impossible to effectively guarantee the quality consistency of double-sided machining.

[0003] Furthermore, in actual production, the frequency of tool changes directly affects the continuous operating time and output capacity of the equipment. However, the tool changing mechanisms of conventionally designed machining equipment are mostly fixed in layout, and the tool changing process is cumbersome and time-consuming, sometimes even requiring machine shutdown and standby to complete the tool change, which undoubtedly further restricts the improvement of the overall production cycle. Therefore, how to develop an innovative machining device based on existing technology that can achieve independent lifting and lowering of the upper and lower spindles to adapt to different workpiece states, ensure strict synchronous operation of both for double-sided synchronous drilling, and integrate efficient and convenient automatic tool changing functions has become a technical problem that urgently needs to be solved in the industry. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a synchronous machining device for upper and lower spindles to solve one or more problems existing in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a synchronous machining device for upper and lower spindles, comprising a main frame; a drilling spindle mechanism, mounted on the main frame, comprising an upper drilling spindle and a lower drilling spindle, the upper drilling spindle and the lower drilling spindle being respectively disposed on the upper and lower sides of the workpiece and arranged coaxially opposite each other; a disc tool changer assembly, disposed on the periphery of the drilling spindle mechanism, for providing replacement tools; wherein, the upper drilling spindle and the lower drilling spindle are both configured to move independently and simultaneously perform double-sided drilling on the workpiece.

[0006] In one embodiment of the present invention, the drilling shaft mechanism includes a drilling shaft plate, which is vertically and flexibly mounted on the main frame; a tool changing spindle, which is fixed to the drilling shaft plate; a tool holder, which is mounted on the output end of the tool changing spindle; and a drill bit, which is detachably connected to the tool changing spindle via the tool holder.

[0007] In one embodiment of the present invention, a lifting slide rail is further included, which is fixed to the main frame along the Z-axis direction; a flange-type slider is slidably disposed on the lifting slide rail and fixedly connected to the side of the drill spindle plate opposite to the tool changing spindle, for guiding the drill spindle plate to move along the Z-axis direction.

[0008] In one embodiment of this utility model, a lead screw is further included, which is arranged along the Z-axis and driven to rotate by a brake motor; a lifting nut seat is fixed to the drill shaft plate and threadedly engaged with the lead screw, which is used to convert the rotational motion of the lead screw into the linear lifting motion of the drill shaft plate.

[0009] In one embodiment of this utility model, the brake motor drives the lead screw to rotate via a synchronous belt transmission mechanism.

[0010] In one embodiment of the present invention, a Y-axis reducer assembly is further included, fixed to the main frame; a gear transmission mechanism is connected between the output end of the Y-axis reducer assembly and the drill shaft plate, for driving the drill shaft plate to move along the Y-axis direction.

[0011] In one embodiment of this utility model, the disc tool changer assembly includes a tool changer base fixed to the main frame; a worm gear reducer installed on the tool changer base; a tool changer central shaft driven to rotate by the worm gear reducer; a tool changer disc disposed at both ends of the tool changer central shaft and rotating synchronously with the tool changer central shaft; and multiple tool clips arranged radially around the periphery of the tool changer disc for holding the tool holders of replacement tools.

[0012] In one embodiment of this utility model, each of the tool holders is equipped with drill bits of different specifications. The drill bits are detachably connected to the output end of the tool changing spindle via the tool holder to achieve automatic tool changing.

[0013] As described above, the synchronous machining device for upper and lower spindles of this utility model has the following beneficial effects: By coaxially arranging the upper and lower drilling spindles, simultaneous drilling on both sides of the workpiece is achieved, significantly improving machining efficiency while ensuring the coaxiality and machining accuracy of the holes. The integrated design of the disc tool changer makes tool changing more convenient, reduces tool change time, and improves the automation level and continuous operation capability of the equipment. The independent lifting motion design of the upper and lower drilling spindles enhances the adaptability of the equipment to workpieces of different thicknesses, making it flexible in operation, compact in structure, and suitable for various machining scenarios, possessing good practicality and promotional value. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 A schematic diagram of the upper and lower spindle synchronous machining device provided by this utility model;

[0016] Figure 2 A schematic diagram of the upper drilling shaft structure of the synchronous machining device for upper and lower spindles provided by this utility model;

[0017] Figure 3 A schematic diagram of the lower drilling shaft structure of the synchronous machining device for upper and lower spindles provided by this utility model;

[0018] Figure 4 A schematic diagram of the disc tool changer assembly of the synchronous machining device for upper and lower spindles provided by this utility model.

[0019] Component designation explanation

[0020] 1. Main frame; 2. Upper drilling shaft; 3. Lower drilling shaft; 4. Disc tool changer assembly; 41. Tool changer base; 42. Tool changer spindle; 43. Tool changer disc; 44. Tool holder; 5. Drill spindle plate; 6. Tool changer spindle; 7. Tool holder; 8. Drill bit; 9. Lifting slide rail; 10. Flange-type slider; 11. Lead screw; 12. Lifting nut seat; 13. Y-axis reducer assembly. Detailed Implementation

[0021] This utility model provides a synchronous machining device for upper and lower spindles. To make the purpose, technical solution, and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and embodiments. In the description of this utility model, it should be understood that the terms "upper," "lower," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and should not be construed as limiting this utility model; in addition, the terms "installation," "connection," etc., should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] Please see Figures 1 to 4 This utility model provides a synchronous machining device for upper and lower spindles, including a main frame 1; a drilling spindle mechanism, mounted on the main frame 1, including an upper drilling spindle 2 and a lower drilling spindle 3, which are respectively disposed on the upper and lower sides of the workpiece and arranged coaxially opposite each other; and a disc tool changer assembly 4, disposed on the periphery of the drilling spindle mechanism, for providing replacement tools; wherein, the upper drilling spindle 2 and the lower drilling spindle 3 are both configured to move independently and simultaneously perform double-sided drilling on the workpiece. By placing the upper drilling shaft 2 and the lower drilling shaft 3 coaxially opposite each other on the upper and lower sides of the workpiece, a symmetrical double-sided synchronous machining structure is formed. This allows the workpiece to be clamped only once to complete the synchronous machining of the double-sided hole system, greatly shortening the machining cycle and improving production efficiency. The drilling shaft design with independent lifting and synchronous movement ensures accurate alignment of the upper and lower holes and can be independently adjusted to adapt to the machining needs of workpieces with different thicknesses or irregular shapes. The disc tool changer 4 is set on the periphery of the drilling shaft mechanism, which optimizes the spatial layout of the tool change path, making it easy for operators to quickly intervene or for the automated system to perform tool replacement, significantly reducing auxiliary time.

[0023] Please see Figure 2 The drilling spindle mechanism includes a drill spindle plate 5, which is vertically mounted on the main frame 1; a tool changer spindle, fixed to the drill spindle plate 5; a tool holder 7, installed at the output end of the tool changer spindle; and a drill bit 8, which is detachably connected to the tool changer spindle via the tool holder 7. The combined structure of the drill spindle plate 5 supporting the tool changer spindle and tool holder 7 achieves integrated design of the drilling functional unit, simplifying the assembly process. The detachable connection between the tool holder 7 and the tool changer spindle allows for flexible replacement of different types or sizes of drill bits 8 according to processing requirements, enhancing the equipment's versatility and process adaptability. The modular construction facilitates daily maintenance and troubleshooting, reducing subsequent operation and maintenance costs.

[0024] To improve the stability of lifting, a lifting slide rail 9 is included, fixed to the main frame 1 along the Z-axis direction; a flange-type slider 10 is slidably disposed on the lifting slide rail 9 and fixedly connected to the side of the drill spindle plate 5 opposite to the tool change spindle, used to guide the drill spindle plate 5 to move along the Z-axis direction. The cooperative design of the lifting slide rail 9 and the flange-type slider 10 provides a high-rigidity linear guide constraint for the drill spindle plate 5, ensuring the stable and reliable movement trajectory of the drilling axis in the Z-axis direction, and effectively suppressing the influence of vibration on machining accuracy; the back-to-back fixed connection between the flange-type slider 10 and the drill spindle plate 5 strengthens the anti-eccentric load capacity of the load-bearing structure and extends the service life of the transmission components.

[0025] It also includes a lead screw 11, arranged along the Z-axis, driven to rotate by a brake motor; and a lifting nut seat 12, fixed to the drill spindle plate 5 and threadedly engaged with the lead screw 11, used to convert the rotational motion of the lead screw 11 into the linear lifting motion of the drill spindle plate 5. Preferably, the brake motor drives the lead screw 11 to rotate via a synchronous belt drive mechanism. The design of the brake motor driving the lead screw 11 via a synchronous belt drive mechanism utilizes the high transmission efficiency and zero-slip characteristics of the synchronous belt to ensure the accuracy and immediacy of power transmission; the synchronous belt drive can also absorb some impact loads and reduce mechanical wear, making it particularly suitable for high-frequency, short-stroke reciprocating motion scenarios, further improving system reliability.

[0026] Please see Figure 3 In one feasible embodiment, the system further includes a Y-axis reducer assembly 13, fixed to the main frame 1; and a gear transmission mechanism connected between the output end of the Y-axis reducer assembly 13 and the drill spindle plate 5, used to drive the drill spindle plate 5 to move along the Y-axis direction. The addition of the Y-axis reducer assembly 13 and the gear transmission mechanism gives the drill spindle plate 5 the ability to move horizontally along the Y-axis direction, expanding the processing range of the equipment and enabling it to handle larger or multi-station workpieces. The rigid meshing characteristics of the gear transmission ensure the positioning accuracy of the Y-axis movement, and combined with the original Z-axis motion, form a flexible processing path in a two-dimensional plane, meeting the diverse processing needs of complex workpieces.

[0027] Please see Figure 4The disc tool changer assembly 4 includes a tool changer base 41 fixed to the main frame 1; a worm gear reducer mounted on the tool changer base 41; a tool changer central shaft 42 driven to rotate by the worm gear reducer; a tool changer disc 43 located at both ends of the tool changer central shaft 42 and rotating synchronously with the tool changer central shaft 42; and multiple tool holders 44 radially arranged around the periphery of the tool changer disc 43 for holding tool holders 7 for replacement tools. Specifically, each tool holder 7 is equipped with a drill bit 8 of different specifications. The drill bit 8 is detachably connected to the output end of the tool changer spindle via the tool holder 7 to achieve automatic tool changing. The rotation of the tool changer disc 43 is precisely controlled by the worm gear reducer to ensure accurate positioning for each tool change action. The design of multiple tool holders 44 allows for rapid switching of drill bits 8 of different specifications, thereby improving processing efficiency. Furthermore, the stable installation of the tool changer base 41 ensures the stability of the entire tool changing process, avoiding errors caused by vibration or offset. The position of each tool holder 44 is precisely calculated to ensure that the tool can accurately align with the output end of the tool change spindle during tool changing, achieving seamless connection. This design not only reduces manual intervention but also significantly improves the automation level and machining accuracy of the equipment.

[0028] In summary, the synchronous machining device of this utility model, by setting an upper drilling shaft 2 and a lower drilling shaft 3 on the upper and lower sides of the workpiece respectively and coaxially opposite each other on the main frame 1, and configuring them to move independently, can realize synchronous drilling on both sides of the workpiece. This effectively avoids the cumbersome operation of multiple positioning and workpiece flipping required in traditional single-sided machining, significantly shortens the overall machining cycle of the workpiece, and significantly improves machining efficiency. At the same time, since the upper drilling shaft 2 and the lower drilling shaft 3 are coaxially opposite each other, the drilling positions on the upper and lower sides of the workpiece can be accurately aligned during synchronous machining, reducing errors caused by multiple positioning, greatly improving the machining accuracy and finished product quality of the workpiece, and reducing the defect rate. In addition, the disc tool changer 4 set on the periphery of the device can conveniently provide replacement tools for the drilling shaft mechanism, eliminating the need for frequent manual tool changes. This not only reduces the intensity of manual operation and the risk of human error, but also allows for quick switching of suitable tools according to different machining needs, expanding the device's adaptability to workpieces of different specifications and materials, and enhancing the device's versatility and practicality. Overall, the device has a reasonable structural design, which improves processing efficiency and quality while also being easy to operate and highly adaptable. It better meets the demands of industrial mass production for efficient, precise, and flexible processing equipment, providing strong support for enterprises to reduce production costs and improve production efficiency. Therefore, this utility model effectively overcomes the various shortcomings of existing technologies and has high industrial application value.

[0029] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of this utility model, and all such substitutions or changes should fall within the protection scope of this utility model.

Claims

1. A synchronous machining device for upper and lower spindles, characterized in that, include Mainframe (1); The drilling shaft mechanism is installed on the main frame (1) and includes an upper drilling shaft (2) and a lower drilling shaft (3). The upper drilling shaft (2) and the lower drilling shaft (3) are respectively arranged on the upper and lower sides of the workpiece and are coaxially opposite to each other. The disc tool changer assembly (4) is disposed on the periphery of the drilling shaft mechanism and is used to provide replacement tools; The upper drilling shaft (2) and the lower drilling shaft (3) are both configured to move independently and simultaneously perform double-sided drilling on the workpiece.

2. The synchronous machining device for upper and lower spindles according to claim 1, characterized in that, The drilling shaft mechanism includes The drill shaft plate (5) is vertically mounted on the main frame (1); The tool changing spindle is fixed to the drill spindle plate (5); The tool holder (7) is installed at the output end of the tool changing spindle; The drill bit (8) is detachably connected to the tool change spindle via the tool holder (7).

3. The synchronous machining device for upper and lower spindles according to claim 2, characterized in that, Also includes The lifting slide rail (9) is fixed to the main frame (1) along the Z-axis direction; A flange-type slider (10) is slidably disposed on the lifting slide rail (9) and fixedly connected to the side of the drill shaft plate (5) away from the tool changing spindle, for guiding the drill shaft plate (5) to move along the Z-axis.

4. The synchronous machining device for upper and lower spindles according to claim 3, characterized in that, Also includes The lead screw (11) is set along the Z-axis and is driven to rotate by the brake motor; The lifting nut seat (12) is fixed to the drill shaft plate (5) and threadedly engaged with the lead screw (11) to convert the rotational motion of the lead screw (11) into the linear lifting motion of the drill shaft plate (5).

5. The synchronous machining device for upper and lower spindles according to claim 4, characterized in that, The brake motor drives the lead screw (11) to rotate via a synchronous belt transmission mechanism.

6. The synchronous machining device for upper and lower spindles according to any one of claims 3-5, characterized in that, Also includes The Y-axis reducer assembly (13) is fixed to the main frame (1). A gear transmission mechanism is connected between the output end of the Y-axis reducer assembly (13) and the drill shaft plate (5) to drive the drill shaft plate (5) to move along the Y-axis direction.

7. The synchronous machining device for upper and lower spindles according to claim 2, characterized in that, The disc tool changer assembly (4) includes The tool changer base (41) is fixed to the main frame (1). The worm gear reducer is installed on the tool changer base (41). The tool changing shaft (42) is driven to rotate by the worm gear reducer; The tool changer (43) is located at both ends of the tool changer shaft (42) and rotates synchronously with the tool changer shaft (42); Multiple tool holders (44) are arranged radially around the periphery of the tool changing disc (43) to hold the tool holders (7) of the replacement tools.

8. The synchronous machining device for upper and lower spindles according to claim 7, characterized in that, Each of the tool holders (7) is equipped with a drill bit (8) of a different specification. The drill bit (8) is detachably connected to the output end of the tool changing spindle through the tool holder (7) to realize automatic tool changing.

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