An automatic drilling device for cylinder body core
The automatic drilling device for cylinder body cores, using dual drill bits and pneumatic drive, enables automatic drilling at multiple positions and angles in the cylinder core production line. This solves the problems of low efficiency and insufficient precision of manual drilling in existing technologies, and improves casting quality and production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ASIMCO INT FOUNDRY (YUNCHENG) CO LTD
- Filing Date
- 2025-09-05
- Publication Date
- 2026-07-31
AI Technical Summary
On existing cylinder core production lines, the drilling of air holes relies on manual operation, which is inefficient and makes it difficult to guarantee the accuracy of drilling position and depth. This can lead to cracking of sand cores or displacement of hole positions, affecting the quality of castings and yield. Furthermore, existing equipment is unable to meet the high-precision and high-efficiency drilling requirements of multiple cylinder models.
The system employs an automatic drilling device with a cylinder body core, equipped with dual drill bits and pneumatic drive. Through the collaborative work of the drilling robot and the handling robot, it achieves automatic drilling at multiple positions and angles. Combined with the positioning and fixing of the flange ring and the recessed stop, it ensures the stability and consistency of the drilling.
It improves the flexibility and safety of the equipment, shortens drilling time, increases the yield of castings, reduces the complexity of tooling changes, enables efficient drilling of sand cores for multiple cylinder block models, and avoids human-caused injuries.
Smart Images
Figure CN224574712U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automated equipment technology for casting production, and in particular to a drilling device for cylinder core production line, used to realize automatic drilling of air holes at multiple angles and positions in the cylinder body sand core. Background Technology
[0002] In the cylinder casting process, the design of the vent holes (also known as air holes or ventilation holes) of the sand core is an important process to ensure casting quality. Its function is to achieve venting, pressure reduction, and crack prevention during the filling and solidification of molten metal, thereby avoiding defects such as shrinkage cavities, air holes, and cracks, and improving the yield and performance of castings.
[0003] Currently, cylinder core-making production lines generally consist of core-making machines, core-taking robots, core-assembly robots, dip-coating robots, surface-drying furnaces, drilling equipment, handling robots, and sand core storage facilities. Among these, drilling pores in the sand cores is a "hidden but crucial" step in the process design, directly determining the quality and stability of the castings.
[0004] In current production, most air holes still rely on manual drilling, which is not only inefficient but also makes it difficult to guarantee the accuracy of drilling position and depth, easily leading to core cracking or hole displacement, thus affecting the yield of subsequent casting. Although some production lines have tried using single-drill-bit drilling devices, they suffer from problems such as low processing efficiency, poor adaptability to drilling angles, and low equipment utilization, and cannot yet meet the actual needs of high-precision, multi-angle, and high-efficiency drilling of multi-model cylinder cores. Utility Model Content
[0005] To solve the above-mentioned technical problems, this utility model provides an automatic drilling device for the cylinder body core.
[0006] The technical solution adopted by this utility model is to provide an automatic drilling device for the cylinder body core, including a transition plate and a flange plate. The top surface of the transition plate is installed on the connecting flange of the end joint of the drilling robot. The flange plate is rectangular in shape. The bottom surface of the transition plate is vertically fixed to the middle of the upper long side of the flange plate. The front side of the flange plate is provided with a groove near the left end and the rear side is provided with a groove near the right end. The left spindle mounting plate and the right spindle mounting plate are respectively installed in the groove. The center of the left spindle mounting plate and the right spindle mounting plate are provided with through holes, and the left drilling spindle and the right drilling spindle are respectively installed. The front end of the left drilling spindle faces the left and is equipped with a left drill bit. The front end of the right drilling spindle faces the right and is equipped with a right drill bit.
[0007] Furthermore, the through hole of the left spindle mounting plate facing the rear end of the left drilling rig spindle and the through hole of the right spindle mounting plate facing the rear end of the right drilling rig spindle are provided with recessed stops. A flange ring is fixedly installed between the shafts of the left and right drilling rig spindles. The flange ring is confined in the recessed stops and connected and fixed by screws.
[0008] Furthermore, the flange plate has a through hole in the groove, and the left spindle mounting plate and the right spindle mounting plate have mounting protrusions at one end. The mounting protrusions are stuck in the groove, and screws are provided on the flange plate to thread through the through hole to connect with the mounting protrusions.
[0009] Furthermore, right-angled triangular ribs are installed between the flange plate and the transition plate for reinforcement.
[0010] Furthermore, both the left and right drilling rig spindles are pneumatically driven.
[0011] Compared with the prior art, the automatic drilling device for the cylinder body core proposed in this utility model has the following advantages: 1. The equipment offers flexible configuration and can adapt to various workpiece models using handling fixtures, reducing the complexity of tooling changes and adjustments, and lowering overall production costs. By cooperating with the drilling robot, this device can achieve drilling of sand cores at different positions, angles, and depths, meeting the process requirements of various cylinder block sand core models. It avoids potential mechanical injuries that may occur during manual drilling, improving operational safety.
[0012] 2. The dual-drill-bit combination structure allows for synchronous or alternating drilling at the same workstation, significantly reducing the drilling time for a single sand core and improving the overall production cycle time. The spindle is positioned and fixed to the flange ring via a recessed stop, and combined with a pneumatic drive device, ensures the stability of the drilling process and the consistency of the hole positions, thereby improving the yield of castings. Attached Figure Description
[0013] Figure 1 This is a top view of the present invention; Figure 2 yes Figure 1 Sectional view along line AA; Figure 3 yes Figure 1 Sectional view along the BB direction; Figure 4 This is an installation diagram of this utility model.
[0014] In the diagram: 1. Transition plate; 2. Flange plate; 3. Slot; 4. Left spindle mounting plate; 5. Right spindle mounting plate; 6. Left drilling rig spindle; 61. Left drill bit; 7. Right drilling rig spindle; 71. Right drill bit; 8. Flange ring; 9. Mounting protrusion; 10. Drilling robot. Detailed Implementation
[0015] To better understand the purpose, structure, and function of this utility model, the following description, in conjunction with the accompanying drawings, provides a more detailed account of an automatic air hole drilling device for the cylinder body core of this utility model.
[0016] like Figures 1-3 As shown, an automatic drilling device for the cylinder body core includes a transition plate 1 and a flange plate 2. The top surface of the transition plate 1 is mounted on the connecting flange of the end joint of the drilling robot 10. The flange plate 2 is rectangular in shape. The bottom surface of the transition plate 1 is vertically fixed to the middle of the upper long side of the flange plate 2. The front side of the flange plate 2 is provided with a groove 3 near the left end and the rear side is provided with a groove 3 near the right end. The left spindle mounting plate 4 and the right spindle mounting plate 5 are respectively installed in the groove 3. The center of the left spindle mounting plate 4 and the right spindle mounting plate 5 is provided with a through hole, and the left drilling spindle 6 and the right drilling spindle 7 are respectively installed. The front end of the left drilling spindle 6 faces the left and is equipped with a left drill bit 61. The front end of the right drilling spindle 7 faces the right and is equipped with a right drill bit 71.
[0017] In this embodiment, the transition plate 1 has a hole in the center, with threaded holes evenly distributed around the hole, and a pin hole is provided on the outer periphery of the hole. Two rows of threaded holes are machined on the left and right sides of the transition plate 1. The transition plate 1 and the flange plate 2 are connected by welding, and the two are reinforced by welding right-angled triangular ribs. The left drill spindle 6 and the right drill spindle 7 are both pneumatically driven. The left drill bit 61 is a φ5×107mm drill bit, and the right drill bit 71 is a φ10×280mm drill bit.
[0018] The groove 3 of the flange plate 2 has three through holes at the top, middle and bottom. One end of the left spindle mounting plate 4 and the right spindle mounting plate 5 is provided with a mounting protrusion 9. The mounting protrusion 9 is stuck in the groove 3. The middle through hole is provided with an internal threaded cylindrical pin and is limited to the mounting protrusion 9. The upper and lower through holes are connected to the mounting protrusion 9 by elastic washers, flat washers and M10 cylindrical head screws.
[0019] The left spindle mounting plate 4 has a through hole facing the rear end of the left drill spindle 6, and the right spindle mounting plate 5 has a through hole facing the rear end of the right drill spindle 7. A flange ring 8 is fixedly installed between the shafts of the left drill spindle 6 and the right drill spindle 7. The flange ring 8 is confined in the recessed stop and the end face of the recessed stop is connected by M4 cylindrical head screws arranged around the circumference and elastic washers.
[0020] like Figure 4As shown, during use, the transition plate 1 connects to the connecting flange of the end joint of the drilling robot 10. An internally threaded cylindrical pin is inserted into the pin hole for positioning. One circumference of the threaded hole is connected to the connecting flange threadedly using an M6 cylindrical head screw, and two rows of threaded holes are connected to the connecting flange threadedly using M8 cylindrical head screws. The transport robot is responsible for moving the sand core to the drilling position. The drilling robot 10 moves from its original position to the tool holder for tool setting. After tool setting, drilling is performed according to the pre-adjusted points. Specifically, the 10mm right drill bit 71 first drills the upper end of the sand core. Then, the transport robot clamps the sand core at a certain angle, and the 10mm right drill bit 71 drills the lower end of the sand core. Finally, the 5mm left drill bit 61 is rotated to drill the cylindrical core on the side of the sand core. The drilling position and depth can be adjusted according to different product requirements. After drilling is completed, the drilling robot 10 returns to its original position. Through signal interaction between the drilling robot 10 and the transport robot, the transport robot moves the sand core to the core placement position, completing one cycle. The drilling device works in conjunction with the handling robot, automatically connecting the sand core handling and drilling processes to achieve unmanned operation and reduce human intervention.
[0021] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.
Claims
1. An automatic drilling device for air holes in the cylinder body core, characterized in that, The transition plate (1) and flange plate (2) are included. The top surface of the transition plate (1) is installed on the connecting flange of the end joint of the drilling robot (10). The flange plate (2) is rectangular. The bottom surface of the transition plate (1) is vertically fixed in the middle of the upper long side of the flange plate (2). The front side of the flange plate (2) is near the left end and the rear side is near the right end. The left spindle mounting plate (4) and the right spindle mounting plate (5) are installed in the groove (3) respectively. The center of the left spindle mounting plate (4) and the right spindle mounting plate (5) is provided with through holes, and the left drilling spindle (6) and the right drilling spindle (7) are installed respectively. The front end of the left drilling spindle (6) faces the left and is equipped with the left drill bit (61). The front end of the right drilling spindle (7) faces the right and is equipped with the right drill bit (71).
2. The automatic drilling device for the cylinder body core according to claim 1, characterized in that, The through hole of the left spindle mounting plate (4) faces the rear end of the left drill spindle (6), and the through hole of the right spindle mounting plate (5) faces the rear end of the right drill spindle (7). A flange ring (8) is fixedly installed between the shafts of the left drill spindle (6) and the right drill spindle (7). The flange ring (8) is confined in the recessed stop and connected and fixed by screws.
3. The automatic drilling device for the cylinder body core according to claim 1, characterized in that, The flange plate (2) has a through hole in the groove (3). The left spindle mounting plate (4) and the right spindle mounting plate (5) have mounting protrusions (9) at one end. The mounting protrusions (9) are stuck in the groove (3). The flange plate (2) has screws that pass through the through hole to connect the mounting protrusions (9).
4. The automatic drilling device for the cylinder body core according to claim 1, characterized in that, Right-angled triangular ribs are provided between the flange plate (2) and the transition plate (1) for reinforcement.
5. The automatic drilling device for the cylinder body core according to any one of claims 1 to 4, characterized in that, Both the left drilling rig spindle (6) and the right drilling rig spindle (7) are pneumatically driven.