A carousel type multi-station automatic drilling machine

Abstract

This invention relates to the field of drilling machine technology and discloses a rotary multi-station automatic drilling machine, including a machine body and a processing disc device and a drilling device disposed inside the machine body. At least two drilling devices are provided, surrounding the outer periphery of the processing disc device. The processing disc device has at least two processing positions. Continuous processing can be achieved through the intermittent rotation of the processing disc device. Furthermore, it can press the workpiece internally from the inside out of the hollow cylinder, conforming to the inner wall of the hollow component to achieve internal support. This allows for support and positioning from within the workpiece. Combined with the external clamping structure, the workpiece is fixed both internally and externally. This avoids slight tilting of the workpiece due to the vertical pressure generated during drilling, which could cause workpiece tilting, slightly tilted workpiece holes, and defective products. This ensures the stability and uniformity of the support.

Description

Technical Field

[0001] This invention relates to the field of drilling machine technology, specifically to a rotary multi-station automatic drilling machine. Background Technology

[0002] In the drilling process of cylinder components, reliable workpiece positioning and clamping are crucial for ensuring hole accuracy and machining quality. Traditional drilling equipment often employs simple external clamping methods, such as fixing the workpiece from the outside using pressure plates or pneumatic clamps. However, for hollow workpieces, while external clamping force can limit horizontal movement, it is difficult to effectively resist the vertical pressure generated during drilling. This pressure can easily cause slight warping on one side of the workpiece, leading to overall tilting of the machined part and ultimately resulting in misaligned holes and defective products. This problem is particularly prominent in rotary multi-station continuous machining scenarios, as the cumulative errors at each station further reduce the consistency of batch processing.

[0003] Furthermore, in actual production, there are many types of hollow cylinder components, ranging from standard cylindrical hollow cylinders to workpieces with irregular contours or non-rotating structures. Traditional fixtures typically only fit a single type of workpiece—using expansion core support for regular hollow parts, while requiring a complete change of fixture body for irregularly shaped parts. This results in long changeover times on production lines, high tooling costs, and a severe lack of versatility. Summary of the Invention

[0004] To address the aforementioned problems in the prior art, this invention provides a rotary multi-station automatic drilling machine, which has the advantages of providing internal support for hollow cylinder workpieces and adapting to other irregularly shaped parts.

[0005] To achieve the above objectives, the present invention provides the following technical solution: including a body and a processing disk device and a drilling device disposed inside the body, wherein at least two drilling devices are provided and surround the outer periphery of the processing disk device, and at least two processing positions are provided on the processing disk device, each processing position is provided with a clamping component through pneumatic control, and the clamping components are all fixedly mounted on the processing disk device through a processing base; The clamping assembly includes side clamping blocks and auxiliary clamping blocks. The side clamping blocks are symmetrically arranged and clamp the two sides of the workpiece. The auxiliary clamping block is fixed between the two side clamping blocks and located on the rear side of the workpiece. A support block is movably arranged inside the auxiliary clamping block. The support block is provided with four support claws. The four support claws slide synchronously along the edge direction of the support block to support the interior of the workpiece.

[0006] Preferably, a side pneumatic inlet is provided on one side of the side clamping block for input and output of pneumatic medium. A clamping plate is fixed on the telescopic shaft on the side of the side clamping block away from the auxiliary clamping block. The workpiece is fixed by the combined action of the clamping plate abutting against and the support claw.

[0007] Preferably, the support block is slidably disposed within the auxiliary clamping block, and auxiliary sliding cylinders are fixed on both sides of the support block. The auxiliary sliding cylinders extend to both sides, penetrate the auxiliary clamping block, and slide within the auxiliary clamping block.

[0008] Preferably, the support block is further provided with a rotating disk and a sliding toothed slide shaft inside. The toothed slide shaft also slides back and forth in the auxiliary slide cylinder under pneumatic control. The toothed slide shaft is engaged with the rotating disk. One end face of the rotating disk is also provided with an end face thread.

[0009] Preferably, the support block has a support groove inside, which extends from the center of the support block to its edge. The support claw slides in the support groove. One end of the support groove is provided with an end face thread that matches the rotating disk. A support arc block is fixed on the outside of the support groove, and the outer periphery of the support arc block is arc-shaped.

[0010] Preferably, the processing plate device includes an indexing plate rotatably mounted in the machine body and a cylinder column fixed at the center of the indexing plate. The outer periphery of the cylinder column is provided with a plurality of main pneumatic outlets, and the main pneumatic outlets are connected to the clamping assembly by hoses.

[0011] Preferably, the indexing plate is provided with an adjusting ring for rotation, and each support block is fixed with an adjusting screw at its bottom. The adjusting screw extends into the indexing plate and is slidably disposed between it and the auxiliary clamping block. A toothed nut is threaded onto the adjusting screw. The toothed nut rotates within the indexing plate and engages with the adjusting ring.

[0012] Preferably, the indexing plate has an arc-shaped adjusting groove, and an adjusting screw is slidably disposed in the adjusting groove. One end of the adjusting screw is fixed on the adjusting ring, and the other end extends to the outside, with an adjusting nut disposed on its outer part.

[0013] Preferably, the drilling device includes a drilling frame, on which a drilling disc is mounted via a hydraulic cylinder, and at least two sets of drill bit units are mounted on the drilling disc for drilling.

[0014] Preferably, the processing position includes at least a loading position, a unloading position, and a drilling position.

[0015] Compared with the prior art, the present invention provides a rotary multi-station automatic drilling machine, which has the following advantages: 1. This rotary multi-station automatic drilling machine can achieve continuous processing through the intermittent rotation of the processing disc device. It can also provide internal support to the workpiece by pressing it from the inside out of the hollow cylinder part, thus achieving support and positioning from within the workpiece. Combined with the external clamping structure, it achieves bidirectional fixation of the workpiece, preventing slight tilting of the workpiece due to vertical pressure generated during drilling, which could lead to workpiece tilting, slightly misaligned holes, and defective products. This ensures the stability and uniformity of the support. For workpieces with different structures, it can provide internal support for hollow workpieces such as air cylinders, and can also clamp and fix irregularly shaped workpieces by retracting the support claws. It can adapt to drilling of various specifications and types of cylinder parts, solving the problem of traditional clamping devices only being able to adapt to a single type of workpiece and having poor versatility.

[0016] 2. This rotary multi-station automatic drilling machine can also quickly and synchronously adjust the initial height of all support components by rotating the adjustment ring, adapting to the processing needs of workpieces with different inner diameters and thicknesses. It does not require individual adjustment of each processing station, reducing the time cost of changeover and debugging, and improving the adaptability and processing flexibility of the device. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the processing disc device of the present invention; Figure 3 This is a schematic diagram of the clamping component structure of the present invention; Figure 4 This is a schematic diagram of the clamping component structure of the present invention; Figure 5 This is a schematic diagram of the support block structure of the present invention; Figure 6 This is a schematic diagram of the half-section structure of the support block of the present invention; Figure 7 This is a schematic diagram of the internal structure of the auxiliary cylinder of the present invention; Figure 8 This is a schematic diagram of the indexing disk structure of the present invention; Figure 9 This is a schematic diagram of the half-section structure of the indexing plate of the present invention; Figure 10 This is a schematic diagram of the workpiece structure processed according to the present invention.

[0018] In the diagram: 10. Machine body; 20. Drilling frame; 21. Drilling disc; 211. Drill bit unit; 30. Indexing disc; 301. Adjusting slide; 31. Cylinder column; 311. Main pneumatic outlet; 32. Adjusting ring; 33. Adjusting screw; 40. Machining base; 41. Side clamping block; 411. Side pneumatic inlet; 412. Clamping plate; 42. Auxiliary clamping block; 43. Support block; 431. Support slide; 432. Support claw; 4321. Support arc block; 433. Auxiliary slide cylinder; 434. Toothed slide shaft; 435. Rotary disc; 44. Adjusting screw; 45. Toothed nut; 50. First machined part; 51. Second machined part; 511. Workpiece clamping part. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] like Figure 1-9 As shown, the machine includes a body 10 and a machining disk assembly and a drilling assembly disposed inside the body 10. At least two drilling assemblies are arranged around the outer periphery of the machining disk assembly, configured to clamp and drill workpieces. The workpiece includes a hollow first machining part 50. The drilling assembly includes a drilling frame 20, on which a drilling disk 21 is mounted via a hydraulic cylinder. At least two sets of drill bit units 211 are mounted on the drilling disk 21 for drilling. Each set of drill bit units 211 has two drill bits, preferably two drilling assemblies, for processing workpieces such as… Figure 10 The workpiece has holes, and the processing plate device is equipped with at least two processing positions. Each processing position is equipped with a clamping component controlled by pneumatics. The clamping components are fixedly installed on the processing plate device through the processing base 40. The processing position includes at least a loading position, a unloading position and a drilling position, that is, at least four working processing positions are set. Other processing positions can be added according to user needs.

[0021] The workpiece to be processed can also be a second workpiece 51. The second workpiece 51 has workpiece clamping parts 511 on both sides. The clamping assembly can clamp onto the workpiece clamping parts 511 to fix the workpiece. The clamping assembly includes side clamping blocks 41 and auxiliary clamping blocks 42. The side clamping blocks 41 are symmetrically arranged and clamp the two sides of the workpiece. The auxiliary clamping block 42 is fixed between the two side clamping blocks 41 and is located on the rear side of the workpiece. A support block 43 is movably arranged inside the auxiliary clamping block 42. Four support claws 432 are arranged inside the support block 43. The four support claws 432 slide synchronously along the edge direction of the support block 43 to support the interior of the workpiece. A side pneumatic inlet 411 is provided on one side of the side clamping block 41 for the input and output of pneumatic medium. A clamping plate 412 is fixed on the telescopic shaft on the side of the side clamping block 41 away from the auxiliary clamping block 42. The workpiece is fixed by the combined action of the clamping plate 412 abutting against and the support of the support claws 432. Specifically, for the clamping of cylinder components (hollow parts) during drilling, it can avoid the slight tilting of the workpiece caused by the vertical pressure generated by the drilling during the drilling process, which would cause the workpiece to tilt and the hole position of the workpiece to be slightly tilted, resulting in defective products.

[0022] Once the workpiece is stably fixed by the clamping assembly, the machining disc device rotates the workpiece to the drilling position. At this time, the hydraulic cylinder of the drilling device is activated, pushing the drilling disc 21 towards the workpiece. Multiple sets of drill bit units 211 with double drill bits on the drilling disc 21 simultaneously perform drilling operations on the workpiece. Since multiple drilling devices are arranged around the outer periphery of the machining disc device, workpieces at different positions can be processed simultaneously. During the feeding process, the hydraulic cylinder can stably control the feed pressure and feed depth. Combined with the clamping structure with internal support, it avoids deformation or positional displacement of the workpiece during drilling, ensuring the machining accuracy and perpendicularity of all holes, and meeting the drilling requirements of the air cylinder components. After the drilling is completed, the machining disc device continues to rotate, moving the processed workpiece to the unloading position. After the clamping assembly is released, the processed workpiece can be removed. At the same time, the loading position can complete the loading and clamping of the next workpiece to be processed, realizing continuous processing operations.

[0023] The support block 43 is slidably disposed within the auxiliary clamping block 42. Auxiliary sliding cylinders 433 are fixed on both sides of the support block 43, extending laterally, penetrating the auxiliary clamping block 42, and sliding within it. A rotating disk 435 and a sliding toothed shaft 434 are rotatably disposed inside the support block 43. The toothed shaft 434 reciprocates within the auxiliary sliding cylinders 433 under pneumatic control. The toothed shaft 434 meshes with the rotating disk 435. One end face of the rotating disk 435 is provided with an end face thread. A support groove 431 is formed inside the support block 43, extending from the center of the support block 43 towards its edge. A support claw 432 slides within the support groove 431. One end of the support groove 431 is provided with an end face thread, which... The rotating disk 435 is matched with a support arc block 4321 fixed on the outer side of the support slide groove 431. The outer periphery of the support arc block 4321 is arc-shaped, which can press from the inside of the hollow part of the cylinder outward and fit against the inner wall of the hollow part to achieve internal support for the workpiece. When the toothed slide shaft 434 slides axially under pneumatic control, it drives the rotating disk 435 to rotate through the meshing structure. The rotating disk 435 drives multiple sets of support claws 432 to slide outward synchronously along the support slide groove 431 through the end face thread, so that the support arc blocks 4321 on the outer side of each support claw 432 evenly press against the inner wall of the workpiece, thus completing the support positioning from the inside of the workpiece. With the help of the outer clamping structure, the workpiece is fixed in both directions, preventing the hollow workpiece from deforming under pressure during drilling and ensuring the stability and uniformity of the support.

[0024] The processing plate device includes an indexing plate 30 rotatably installed inside the machine body 10 and a cylinder column 31 fixed at the center of the indexing plate 30. Several main pneumatic outlets 311 are provided on the outer periphery of the cylinder column 31. The main pneumatic outlets 311 are connected to the clamping assembly through hoses. An adjusting ring 32 is rotatably installed inside the indexing plate 30. An adjusting screw 44 is fixed at the bottom of each support block 43. The adjusting screw 44 extends into the indexing plate 30 and slides between it and the auxiliary clamping block 42. A toothed nut 45 is threaded onto the adjusting screw 44. The toothed nut 45 rotates inside the indexing plate 30 and meshes with the adjusting ring 32. An arc-shaped adjusting groove 301 is opened on the indexing plate 30. An adjusting screw 33 is slidably installed in the adjusting groove 301. One end of the adjusting screw 33 is fixed to the adjusting ring 32, and the other end extends to the outside. An adjusting nut is provided on the outer part of the adjusting screw 33.

[0025] When it is necessary to adjust the position of multiple support components according to the inner diameter of the hollow cylinder workpiece, after loosening the adjusting nut, the adjusting screw 33 can be turned to drive the adjusting ring 32 to rotate within the indexing plate 30. The adjusting ring 32 drives all toothed nuts 45 to rotate synchronously through the meshing structure. The toothed nuts 45 drive the adjusting screw 44 to slide axially through the thread transmission, thereby driving the entire support component to adjust its height, quickly completing the initial position adjustment of the support component, adapting to hollow workpieces with different inner diameters. After the adjustment is completed, tightening the adjusting nut will lock the position of the adjusting ring 32, completing the adjustment and fixing.

[0026] Working Principle: As shown in Figure 10, the workpiece is placed on the machining position manually or by a robot. The air pump is started and gas is transmitted through the main pneumatic outlet 311, causing the telescopic shaft in the side clamping block 41 to retract, pushing the workpiece towards the auxiliary clamping block 42. The workpiece then abuts against the auxiliary clamping block 42. If the workpiece has a cylindrical cavity, the support claw 432 can enter the cavity. Then, the air pump is started, driving the toothed sliding shaft 434 in the auxiliary sliding cylinder 433 to slide, which drives the rotating disk 435 to rotate. Then, the support claw 432 is driven to expand outward synchronously through the end face thread (similar to the structure of a three-jaw chuck) until the support arc block 4321 abuts against the inner wall of the workpiece, thus preventing the workpiece from sliding radially. At the same time, the support surface of the support arc block 4321 is relatively long, which can effectively prevent the vertical offset (perpendicular to the indexing plate 30, i.e., consistent with the direction of movement of the drilling plate 21) during the drilling process, thus preventing the hole position from tilting and making the workpiece unqualified.

[0027] After processing, the cylinder drives the toothed sliding shaft 434 to slide in the opposite direction, which in turn drives the support claw 432 to retract through the rotating disk 435, thus releasing the workpiece. Then, the cylinder pushes the extension axis of the side clamping block 41 away from the auxiliary clamping block 42 again to completely release the workpiece. At this time, the workpiece can be removed manually or by a robot.

[0028] When the workpiece being processed is solid inside, with the thickness on both sides being less than the thickness in the middle, after placing the workpiece on the processing position, first adjust the support claw 432 to extend it to its maximum distance, forming a wider cross-shaped clamping space. The workpiece can be placed flat or vertically (depending on processing requirements). Then, it is initially clamped by the telescopic shaft of the side clamping block 41. At this time, the side of the workpiece with the smaller thickness enters this cross-shaped clamping space. Then, the cylinder causes the toothed sliding shaft 434 to slide, which drives the support claw 432 to retract inward through the rotating disk 435. Thus, the workpiece can be clamped by the support arc block 4321, preventing the workpiece from shifting vertically during processing.

[0029] After processing is completed, the cylinder starts and drives the support claw 432 to unfold outward, releasing the workpiece. Then the cylinder pushes the extension axis of the side clamping block 41 away from the auxiliary clamping block 42 again to completely release the workpiece. At this time, the workpiece can be removed manually or by a robot.

[0030] When the thickness of the workpiece is different, after the support claw 432 supports it, the workpiece may not be able to abut against the processing base 40 (i.e., it will be suspended). At this time, the support claw 432 is subjected to greater force during processing and is prone to breakage. In this case, the workpiece can be clamped in a processing position first, and then the adjusting ring 32 can be rotated by moving the adjusting screw 33, thereby driving the toothed nut 45 to rotate. The rotation of the toothed nut 45 will cause the support block 43 to move the workpiece downward through the support claw 432 until the workpiece abuts against the processing base 40. At this time, all processing positions are adjusted and the workpiece can be processed directly.

[0031] In summary, this rotary multi-station automatic drilling machine, after completing the drilling process, allows the processing disc to continue rotating, moving the finished workpiece to the unloading position. Once the clamping components release, the finished workpiece can be removed, while the loading position can simultaneously load and clamp the next workpiece, enabling continuous processing. Furthermore, it can press the hollow cylinder from the inside out, conforming to the inner wall of the hollow component to provide internal support for the workpiece. This internal support and positioning, combined with the external clamping structure, achieves bidirectional fixation of the workpiece, preventing deformation of the hollow workpiece under pressure during drilling and ensuring the stability and uniformity of the support. The initial height of all support components can be quickly and synchronously adjusted by rotating the adjusting ring to accommodate workpieces with different inner diameters and thicknesses, eliminating the need for individual adjustments at each processing station. This reduces the time cost of changeover and debugging, and enhances the adaptability and processing flexibility of the device. For workpieces with different structures, it can provide internal support for hollow workpieces such as air cylinders, and can also clamp and fix irregularly shaped workpieces by retracting the support claws. It can adapt to drilling of cylinder parts of various specifications and types, solving the problem that traditional clamping devices can only adapt to a single type of workpiece and have poor versatility. At the same time, it effectively avoids the tilting or deformation of the workpiece due to uneven force during drilling, thus improving the yield and processing accuracy of drilling.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0033] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rotary multi-station automatic drilling machine, comprising a machine body (10) and a processing disc device and a drilling device disposed inside the machine body (10), wherein at least two drilling devices are disposed around the outer periphery of the processing disc device and configured to clamp and drill workpieces, wherein the workpiece includes a first processing part (50) with a hollow interior, characterized in that: The processing tray device is provided with at least two processing positions. Each processing position is equipped with a clamping component through pneumatic control. The clamping components are all fixedly installed on the processing tray device through the processing base (40). The clamping assembly includes a side clamping block (41) and an auxiliary clamping block (42). The side clamping blocks (41) are symmetrically arranged and clamp the two sides of the workpiece. The auxiliary clamping block (42) is fixed between the two side clamping blocks (41) and located on the rear side of the workpiece. A support block (43) is movably arranged inside the auxiliary clamping block (42). Four support claws (432) are arranged inside the support block (43). The four support claws (432) slide synchronously along the edge direction of the support block (43) to support the interior of the workpiece.

2. The rotary multi-station automatic drilling machine according to claim 1, characterized in that: The side clamping block (41) is provided with a side pneumatic inlet (411) for the input and output of pneumatic medium. A clamping plate (412) is fixed on the telescopic shaft of the side clamping block (41) away from the auxiliary clamping block (42). The workpiece is fixed by the combined action of the clamping plate (412) abutting against and the support claw (432).

3. The rotary multi-station automatic drilling machine according to claim 1, characterized in that: The support block (43) is slidably disposed within the auxiliary clamping block (42). Auxiliary sliding cylinders (433) are fixed on both sides of the support block (43). The auxiliary sliding cylinders (433) extend to both sides, penetrate the auxiliary clamping block (42), and slide within the auxiliary clamping block (42).

4. A rotary multi-station automatic drilling machine according to claim 3, characterized in that: The support block (43) is also rotatably equipped with a rotating disk (435) and a sliding toothed slide shaft (434). The toothed slide shaft (434) is also pneumatically controlled to slide back and forth in the auxiliary slide cylinder (433). The toothed slide shaft (434) is meshed with the rotating disk (435). One end face of the rotating disk (435) is also provided with an end face thread.

5. A rotary multi-station automatic drilling machine according to claim 4, characterized in that: The support block (43) has a support groove (431) inside. The support groove (431) extends from the center of the support block (43) to its edge. The support claw (432) slides in the support groove (431). One end of the support groove (431) is provided with an end face thread that matches the rotating disk (435). A support arc block (4321) is fixed on the outside of the support groove (431). The outer periphery of the support arc block (4321) is arc-shaped.

6. A rotary multi-station automatic drilling machine according to claim 1, characterized in that: The processing plate device includes an indexing plate (30) rotatably installed in the machine body (10) and a cylinder column (31) fixed at the center of the indexing plate (30). The outer periphery of the cylinder column (31) is provided with a number of main pneumatic outlets (311). The main pneumatic outlets (311) are connected to the clamping assembly by a hose.

7. A rotary multi-station automatic drilling machine according to claim 6, characterized in that: An adjusting ring (32) is rotatably arranged inside the indexing plate (30). An adjusting screw (44) is fixed at the bottom of each support block (43). The adjusting screw (44) extends into the indexing plate (30) and slides between it and the auxiliary clamping block (42). A toothed nut (45) is threaded onto the adjusting screw (44). The toothed nut (45) rotates inside the indexing plate (30) and meshes with the adjusting ring (32).

8. A rotary multi-station automatic drilling machine according to claim 7, characterized in that: The indexing plate (30) is provided with an arc-shaped adjustment groove (301), and an adjustment screw (33) is slidably arranged in the adjustment groove (301). One end of the adjustment screw (33) is fixed on the adjustment ring (32), and the other end extends to the outside, with an adjustment nut provided on its outer part.

9. A rotary multi-station automatic drilling machine according to claim 1, characterized in that: The drilling device includes a drilling frame (20), on which a drilling disc (21) is mounted via a hydraulic cylinder, and at least two sets of drill bit units (211) are mounted on the drilling disc (21) for drilling.

10. A rotary multi-station automatic drilling machine according to claim 1, characterized in that: The processing station includes at least a loading station, a unloading station, and a drilling station.

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