Three-dimensional hole processing equipment for automobile door handle

Abstract

The application relates to a three-dimensional hole position processing equipment for an automobile door handle, and relates to the technical field of handle processing equipment. The three-dimensional hole position processing equipment comprises a numerical control machining center, a drilling assembly, a chamfer assembly, a tooling table and a fixing assembly. The numerical control machining center is connected with the drilling assembly and the chamfer assembly through a mounting assembly, so as to drive the drilling assembly and the chamfer assembly to process the handle. The tooling table is used for placing the handle. The fixing assembly is arranged on the tooling table, so that the handle can be fixed on the tooling table. The fixing assembly comprises a limiting piece and a pressing piece. The limiting piece is internally formed with a placing space for inserting the handle, so as to limit the rotation of the handle on the tooling table. The pressing piece can tightly fix the handle on the tooling table. The application has the integrated processing of drilling and chamfering operations, reduces the multiple clamping of the handle between different processes, effectively reduces the cumulative error caused by repeated clamping, and improves the precision of hole position processing.

Description

Technical Field

[0001] This application relates to the field of handle processing equipment technology, and in particular to a three-dimensional hole processing equipment for automobile door handles. Background Technology

[0002] Car handles are responsible for opening and closing car doors. When manufacturing car handles, drilling equipment is needed to machine mounting holes in the handle, and then the opening of the mounting hole is chamfered to facilitate the subsequent installation of the handle.

[0003] When processing the handle, the handle is first drilled using a drilling machine, and then placed on a chamfering machine for chamfering. The chamfering and drilling are performed as two separate processes. This means that after the handle is clamped twice, the hole position may shift due to workpiece loosening or machine tool error, resulting in large errors and low precision in the machining of the mounting holes on the handle. Summary of the Invention

[0004] To address the issue of large errors and low precision in machining mounting holes on automotive door handles due to the numerous clamping operations, this application provides a three-dimensional hole machining device for automotive door handles.

[0005] The three-dimensional hole processing equipment for automobile door handles provided in this application adopts the following technical solution: A three-dimensional hole machining device for automotive door handles includes a CNC machining center, a drilling assembly, a chamfering assembly, a tooling table, and a fixing assembly. The CNC machining center can be connected to the drilling assembly and the chamfering assembly respectively to drive the drilling assembly and the chamfering assembly to process the handle. The tooling table is used to place the handle, and the fixing assembly is disposed on the tooling table to fix the handle on the tooling table. The fixing assembly includes a limiting member and a clamping member. The limiting member forms a placement space for inserting the handle to restrict the rotation of the handle on the tooling table, and the clamping member can press and fix the handle on the tooling table.

[0006] By adopting the above technical solution, when processing the car door handle, the handle is clamped on a fixture, and the CNC machining center drives the drilling assembly to drill holes in the handle to form mounting holes. After drilling is completed, the drilling assembly is replaced with a chamfering assembly, and the CNC machining center drives the chamfering assembly to chamfer the mounting holes. After chamfering is completed, the handle is removed from the fixture, completing the processing of the three-dimensional holes in the car door handle. This achieves integrated processing of drilling and chamfering, reducing the number of clamping operations between different processes, effectively reducing the cumulative error caused by repeated clamping, and improving the accuracy of hole processing. At the same time, the design of the limiting and clamping components ensures the stability and accurate positioning of the handle during processing, further improving the processing quality.

[0007] Preferably, the CNC machining center includes a movable frame and a machining head. The movable frame is connected to the machining head to drive the machining head to move. The machining head is detachably connected to the drilling assembly and the chamfering assembly, and can drive the drilling assembly and the chamfering assembly to rotate.

[0008] By adopting the above technical solution, the coordinated use of the moving frame and machining head of the CNC machining center enables precise movement of the drilling and chamfering components in three-dimensional space, ensuring the machining accuracy of holes in the handle at different positions. Simultaneously, the detachable connection design between the machining head and the drilling and chamfering components facilitates quick tool changes and improves machining efficiency. Furthermore, the machining head's ability to rotate the drilling and chamfering components ensures the consistency and stability of drilling and chamfering operations, further enhancing machining quality.

[0009] Preferably, the drilling assembly includes a first tool holder and a drill bit, the drill bit being mounted on the first tool holder, and the first tool holder being detachably and fixedly connected to the machining head.

[0010] By adopting the above technical solution, the drill bit of the drilling assembly is mounted on the first tool holder, and the first tool holder can be detachably and fixedly connected to the machining head, thereby realizing rapid replacement and positioning of the drill bit and improving drilling efficiency and accuracy. At the same time, this design allows for the flexible selection and replacement of different types of drill bits according to actual needs, enhancing the adaptability and flexibility of the equipment.

[0011] Preferably, the chamfering assembly includes a second tool holder and a chamfering cutter, the chamfering cutter being disposed on the second tool holder, and the second tool holder being detachably and fixedly connected to the machining head.

[0012] By adopting the above technical solution, the chamfering cutter is mounted on the second tool holder, ensuring the stability and accuracy of the chamfering operation. The second tool holder can be detachably and fixedly connected to the machining head, facilitating the replacement of different machining tools, reducing changeover time, and improving production efficiency.

[0013] Preferably, the CNC machining center is equipped with a mechanical tool magazine and a tool changing robot. The drilling assembly and the chamfering assembly are both placed in the mechanical tool magazine. The tool changing robot can remove the drilling assembly or the chamfering assembly from the mechanical tool magazine and install it onto the machining head, and can also remove the drilling assembly or the chamfering assembly from the machining head and place it into the mechanical tool magazine.

[0014] By adopting the above technical solution, the CNC machining center is equipped with a mechanical tool magazine and a tool-changing robot, which can automatically complete the replacement of drilling and chamfering components, improving machining efficiency and automation. At the same time, it reduces human intervention, lowers the risk of operational errors, and further ensures machining accuracy.

[0015] Preferably, the limiting component includes a limiting plate and a plurality of limiting posts, each of the limiting posts being disposed on the tooling table, and the plurality of limiting posts being disposed on both sides of the handle to limit the handle. The limiting plate can contact the end of the handle to limit the handle.

[0016] By adopting the above technical solution, the limiting plate and multiple limiting posts work together to effectively restrict the position of the handle on the tooling table, preventing it from moving or rotating during processing, thereby ensuring the accuracy and stability of hole machining. At the same time, the design of the limiting posts being located on both sides of the handle further improves the handle's positioning accuracy, reduces errors caused by workpiece loosening, and enhances the quality of the final product.

[0017] Preferably, the clamping component includes a linear drive mechanism and a pressure plate. The linear drive mechanism is disposed on the tooling table and connected to the pressure plate. The handle can be located between the pressure plate and the tooling table. The linear drive mechanism can drive the pressure plate to press the handle onto the tooling table.

[0018] By adopting the above technical solution, stable fixing of the handle component is achieved, ensuring that the handle component will not shift during processing, thus improving the accuracy and reliability of hole machining. At the same time, this design simplifies the structure of the fixing device, reduces production costs, and facilitates quick installation and removal of the handle component by operators, thereby improving work efficiency.

[0019] Preferably, a guide rod is fixedly provided on the tooling table. The guide rod passes through the pressure plate and is slidably connected to the pressure plate. A first groove and a second groove are provided on the guide rod. The pressure plate is provided with a guide block that can slide within the first groove and the second groove. The first groove can guide the pressure plate to rotate so that the pressure plate deviates from directly above the handle. The second groove can guide the pressure plate to slide in the vertical direction. The pressure plate is connected to the linear drive mechanism through a rotating cylinder so as to drive the pressure plate to slide.

[0020] By adopting the above technical solution, when the linear drive mechanism drives the pressure plate to rise, the pressure plate rises with the cooperation of the guide block and the second groove section. As the pressure plate rises, the guide block slides from the second groove section into the first groove section. With the cooperation of the guide block and the first groove section, the pressure plate rotates around the guide rod, causing the pressure plate to deviate from the handle. This effectively avoids the pressure plate from obstructing the loading and unloading of materials on the handle, thereby improving the convenience of assembling and disassembling the handle.

[0021] Preferably, the rotating cylinder includes a first cylinder fixedly connected to the pressure plate and a second cylinder connected to the linear drive mechanism. The second cylinder is sleeved on the first cylinder and rotatably connected to the first cylinder. The limiting post located on one side of the handle is a movable post. The movable post is slidably connected to the tooling table. A connecting rod fixedly connected to the movable post is slidably provided on the tooling table. A cam is provided on the first cylinder. A push rod connected to the cam is slidably provided on the tooling table. The first cylinder can drive the cam to rotate so as to push the push rod to slide. The push rod and the connecting rod are connected by a connector so that the push rod can drive the movable post to press the handle toward the corresponding limiting post.

[0022] By adopting the above technical solution, when the handle is placed between the limiting post and the movable post, the pressure plate moves down and rotates under the guidance of the first groove section, causing the first cylinder to drive the cam to rotate. The cam pushes the push rod to slide, and the push rod drives the connecting rod to slide through the connector. The connecting rod drives the movable post to slide, so that the movable post presses the handle tightly against the limiting post, thereby improving the firmness and stability of the handle clamping.

[0023] Preferably, the connecting member includes an intermediate rod and a transmission block. The intermediate rod is slidably connected to the tooling table. The intermediate rod has a first inclined surface connected to the connecting rod to push the connecting rod to slide. The transmission block is disposed between the intermediate rod and the push rod. The push rod can push the intermediate rod to slide with the help of the transmission block. The intermediate rod has a second inclined surface. The transmission block has a third inclined surface that fits against the second inclined surface. The push rod can push the transmission block to slide along the second inclined surface to shorten the distance between the push rod and the intermediate rod. The push rod has a telescopic spring connected to the transmission block. The telescopic spring can compress the third inclined surface and the second inclined surface to keep them stationary so that the push rod can push the intermediate rod to slide.

[0024] By adopting the above technical solution, when the push rod slides, it presses the intermediate rod to slide through the transmission block, enabling the intermediate rod to push the connecting rod to slide, thereby driving the movable column. When fixing handles of different widths, the pressure plate may need to continue rotating even when the movable column reaches its movement limit. In this case, the push rod pushes the transmission block to slide along the second inclined plane, the transmission block compresses the telescopic spring to contract, and the push rod and intermediate rod gradually move closer together, allowing the pressure plate to rotate above the handle. This enables the clamping of handles of different widths and improves the flexibility of clamping the handle onto the tooling table.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. It achieves integrated machining of drilling and chamfering operations, reducing the need for multiple clamping operations on the handle between different processes, effectively reducing the cumulative error caused by repeated clamping, and improving the accuracy of hole machining. At the same time, the design of the limiting and clamping components ensures the stability and accurate positioning of the handle during machining, further improving the machining quality; 2. The limiting plate and multiple limiting posts work together to effectively limit the position of the handle on the tooling table, preventing it from moving or rotating during processing, thereby ensuring the accuracy and stability of hole machining; at the same time, the design of the limiting posts being located on both sides of the handle further improves the positioning accuracy of the handle, reduces errors caused by workpiece loosening, and improves the quality of the final product. 3. When the linear drive mechanism drives the pressure plate to rise, the pressure plate rises with the cooperation of the guide block and the second groove section. As the pressure plate rises, the guide block slides from the second groove section into the first groove section. With the cooperation of the guide block and the first groove section, the pressure plate rotates around the guide rod, causing the pressure plate to deviate from the handle. This effectively avoids the pressure plate from obstructing the loading and unloading of materials on the handle, thereby improving the convenience of assembling and disassembling the handle. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the three-dimensional hole processing equipment for automobile door handles according to Embodiment 1 of this application.

[0027] Figure 2 This is a structural diagram used to illustrate a CNC machining center.

[0028] Figure 3 yes Figure 2 Enlarged view of section A.

[0029] Figure 4 This is a structural diagram used to demonstrate the limiting and clamping components.

[0030] Figure 5 This is a schematic diagram of the structure of the three-dimensional hole processing equipment for automobile door handles according to Embodiment 2 of this application.

[0031] Figure 6This is a bottom view of the tooling table.

[0032] Figure 7 yes Figure 5 Enlarged view of section B in the middle.

[0033] Figure 8 It is along Figure 6 A cross-sectional view of the CC line.

[0034] Figure 9 yes Figure 8 Enlarged view of section D in the middle.

[0035] Explanation of reference numerals in the attached drawings: 1. CNC machining center; 11. Moving frame; 12. Machining head; 13. Mechanical tool magazine; 14. Tool changing robot; 2. Drilling assembly; 21. First tool holder; 22. Drill bit; 3. Chamfering assembly; 31. Second tool holder; 32. Chamfering end mill; 4. Tooling table; 5. Fixing assembly; 51. Limiting component; 511. Limiting plate; 512. Limiting post; 52. Clamping component; 521. Linear drive mechanism; 522. Pressure plate; 6. Handle; 71. Movable column; 72. Strip hole; 73. Connecting rod; 74. Guide rod; 751. First groove section; 752. Second groove section; 76. Guide block; 77. Rotating cylinder; 771. First cylinder body; 772. Second cylinder body; 81. Cam; 82. Push rod; 83. Connecting piece; 831. Intermediate rod; 832. Transmission block; 833. First inclined plane; 834. Second inclined plane; 835. Third inclined plane; 836. Telescopic spring; 9. Tooling frame. Detailed Implementation

[0036] The following is in conjunction with the appendix Figure 1-9 This application will be described in further detail.

[0037] This application discloses a three-dimensional hole processing device for automobile door handles.

[0038] Example 1 Reference Figure 1 , Figure 2 The three-dimensional hole processing equipment for car door handles includes a CNC machining center 1, a drilling assembly 2, a chamfering assembly 3, a tooling table 4, and a fixing assembly 5. The CNC machining center 1 can be connected to the drilling assembly 2 and the chamfering assembly 3 respectively, and drive the drilling assembly 2 and the chamfering assembly 3 to rotate, performing drilling and chamfering processing on the handle 6. The tooling table 4 is used to place the handle 6, and the fixing assembly 5 is set on the tooling table 4. In this embodiment, there are three sets of fixing assemblies 5. Each set of fixing assemblies 5 includes two sets of limiting members 51 and one set of clamping members 52. Each set of limiting members 51 forms a placement space for inserting the handle 6, restricting the handle 6 from rotating in a plane on the tooling table 4. Each set of clamping members 52 can simultaneously clamp and fix two handles 6 on the tooling table 4. The three sets of fixing assemblies 5 can clamp six handles 6 on the tooling table 4 at a time.

[0039] When machining the car door handle 6, the handle 6 is clamped on the tooling table 4. The CNC machining center 1 drives the drilling assembly 2 to drill holes in the handle 6 to form mounting holes. After drilling is completed, the drilling assembly 2 is replaced with the chamfering assembly 3. The CNC machining center 1 drives the chamfering assembly 3 to chamfer the mounting holes. After chamfering is completed, the handle 6 is removed from the tooling table 4, completing the machining of the three-dimensional holes in the car door handle 6. This achieves integrated machining of drilling and chamfering operations, reducing the number of clamping operations between different processes for the handle 6, effectively reducing the cumulative error caused by repeated clamping, and improving the accuracy of hole machining. At the same time, the design of the limiting component 51 and the clamping component 52 ensures the stability and accurate positioning of the handle 6 during the machining process, further improving the machining quality.

[0040] Reference Figure 2 , Figure 3 In this embodiment, the drilling assembly 2 and the chamfering assembly 3 are two separate sets. The drilling assembly 2 includes a first tool holder 21 and a drill bit 22. The drill bit 22 is mounted on the first tool holder 21. The two drill bits 22 have different diameters and are used to machine through holes and countersunk holes on the handle 6, respectively. The chamfering assembly 3 includes a second tool holder 31 and a chamfering cutter 32. The two chamfering cutters 32 also have different diameters and are used to chamfer the openings of the through holes and countersunk holes, respectively. The first tool holder 21 and the second tool holder 31 have the same structure, both being turret-type tool holders.

[0041] Reference Figure 2 The CNC machining center 1 includes a movable frame 11 and a machining head 12. The movable frame 11 is connected to the machining head 12 and drives the machining head 12 to move. The movable frame 11 includes a Z-axis movable arm, and the machining head 12 is fixedly mounted on the Z-axis movable arm. The tooling frame 9 is equipped with an X-axis movable arm and a Y-axis movable arm. The Y-axis movable arm is mounted on the X-axis movable arm, and the tooling table 4 is mounted on the Y-axis movable arm. The X-axis movable arm and the Y-axis movable arm drive the tooling table 4 to move in the X and Y directions of the plane. The Z-axis movable arm drives the machining head 12 to rise and fall in the vertical direction. Six handles 6 are arranged along the Y-axis and clamped on the tooling table 4. A spindle is rotatably mounted on the machining head 12. The spindle is driven to rotate by an external motor. The spindle can clamp and fix the first tool holder 21 and the second tool holder 31 through a clamping device. The spindle transmits the power of the machine tool to the first tool holder 21 and the second tool holder 31, driving the drill bit 22 and the chamfering cutter 32 to rotate for machining.

[0042] Reference Figure 2The tooling frame 9 is equipped with a mechanical tool magazine 13 and a tool changing robot 14 on one side of the CNC machining center 1. In this embodiment, the mechanical tool magazine 13 is a turret-type tool magazine, with tools mounted on the turret. Tool switching is achieved by rotating the turret, resulting in a simple structure. The drilling assembly 2 and the chamfering assembly 3 are both placed inside the mechanical tool magazine 13, which is used to replace the drill bit 22 and the chamfering cutter 32. The tool changing robot is mounted on the tooling frame 9. When a tool change is needed, the machining head 12 moves to the other side of the tool changing robot 14. One station of the robot accurately grabs the tool from the tool magazine and transfers it to the spindle position. The other station removes the old tool from the spindle and accurately places the replaced tool back into the designated position in the tool magazine. At the same time, a new tool is loaded into the spindle, thus completing the exchange operation between the old and new tools.

[0043] When changing tools, an automatic tool changer (ATC) system is used for control. The automatic tool changer (ATC) system includes a numerical control system (CNC), a programmable logic controller (PLC), sensors, drive devices, safety protection devices, and a human-machine interface (HMI).

[0044] The CNC system is the core of the automatic tool changer control system. It receives tool change commands from the machining program and schedules the movements of the tool magazine, robot arm, and spindle according to the program requirements. The CNC system precisely controls the tool change process through internal software algorithms, ensuring that automatic tool exchange can be completed efficiently and accurately.

[0045] A programmable logic controller (PLC) is used to implement the logic control of a tool changing system. It receives instructions from the CNC system and controls the specific actions during the tool changing process. A PLC can process various sensor signals, such as tool magazine position and robot status, ensuring the logical sequence and safety of the tool changing process.

[0046] Sensors are used to detect various status information during the tool changing process, such as tool position, tool magazine status, and robot arm movements. These sensors feed the detected information back to the control system, allowing the control system to adjust and control according to the actual situation.

[0047] The drive unit, including electric motors, pneumatic components, or hydraulic components, is used to drive the movement of the tool magazine, robotic arm, and tool changer. These drive units perform the actions of picking up, placing, transferring, and installing tools according to instructions from the control system.

[0048] Safety protection devices are an important component of the control system, including sensors, limit switches, and emergency stop buttons. These devices monitor the operating status of the tool changing system, ensuring timely shutdown in case of malfunctions or abnormal conditions to prevent accidents.

[0049] Human-Machine Interface (HMI) is used for interaction between operators and control systems. Operators can input tool data, monitor tool change status, and perform fault diagnosis through HMI.

[0050] The CNC machining center 1 is equipped with a cutting fluid circulation system. The outlet of the cutting fluid circulation system is located on the machining head 12 and faces the tool on the machining head 12. When the tool is machining the handle 6, the cutting fluid circulation system sprays the cutting fluid from the outlet to the machining area to cool the tool.

[0051] Reference Figure 4 In this embodiment, the limiting member 51 includes a limiting plate 511 and several limiting posts 512. Two sets of limiting members 51 share a single limiting plate 511, which is installed at the edge of the tooling table 4. The several limiting posts 512 are divided into two groups, with a total of at least three posts in each group, and are positioned on both sides of the handle 6, forming a placement space between the two groups of posts 512. Each limiting post 512 in this embodiment is fixedly connected to the tooling table 4. The limiting plate 511 can contact the end of the handle 6 to limit its position. When installing the handle 6, the handle 6 is inserted into the placement space, and the end of the handle 6 is aligned with the limiting plate 511 to complete the placement of the handle 6, improving the accuracy and convenience of the handle 6's positioning. The limiting plate 511 and the multiple limiting posts 512 work together to effectively limit the position of the handle 6 on the tooling table 4, preventing it from moving or rotating during processing, thereby ensuring the accuracy and stability of the hole machining.

[0052] Reference Figure 4 In this embodiment, the clamping component 52 includes a linear drive mechanism 521 and a pressure plate 522. The linear drive mechanism 521 includes, but is not limited to, a linear cylinder, a linear hydraulic cylinder, or a linear motor. The linear drive mechanism 521 is located at the bottom of the tooling table 4, and its drive shaft passes through the tooling table 4. The pressure plate 522 is fixedly installed at one end of the drive shaft of the linear drive mechanism 521 that passes through the tooling table 4. Both ends of the pressure plate 522 extend above the two coaxial placement spaces, ensuring that the pressure plate 522 can press and fix the two handles 6 onto the tooling table 4. This achieves stable fixing of the handles 6, ensuring that the handles 6 will not shift during processing, thus improving the accuracy and reliability of hole machining. Simultaneously, this design simplifies the structure of the fixing device, reduces production costs, and facilitates quick installation and removal of the handles 6 by operators, improving work efficiency.

[0053] The implementation principle of Example 1 is as follows: When processing the car handle 6, the handles 6 are first placed one by one in the placement space enclosed by the limiting posts 512. The linear drive mechanism 521 drives the pressure plate 522 to press and fix the handles 6 on the tooling table 4, thus completing the clamping of the handles 6 on the tooling table 4. The CNC machining center 1 drives the drill bit 22 to drill holes in the handles 6 to form mounting holes. After drilling is completed, the tool changing robot 14 replaces the drill bit 22 to realize the processing of through holes and countersunk holes on the handles 6. After the hole processing is completed, the drilled holes are... Component 2 is replaced with chamfering component 3. The CNC machining center 1 drives the chamfering component 3 to chamfer the mounting hole. After chamfering, the linear drive mechanism 521 drives the pressure plate 522 to rise, releasing the pressure plate 522 from fixing the handle 6. The handle 6 is then removed from the tooling table 4, completing the machining of the three-dimensional hole of the car door handle 6. This achieves integrated machining of drilling and chamfering operations, reducing the number of clamping operations of the handle 6 between different processes, effectively reducing the cumulative error caused by repeated clamping, and improving the accuracy of hole machining. At the same time, the design of the limiting component 51 and the clamping component 52 ensures the stability and accurate positioning of the handle 6 during the machining process, further improving the machining quality.

[0054] Example 2 Reference Figure 5 , Figure 6 The difference between this embodiment and embodiment 1 is that in this embodiment, the middle two sets of limiting posts 512 corresponding to each pressure plate 522 are set as movable posts 71. Each set of movable posts 71 is slidably connected to the tooling table 4. The tooling table 4 has strip holes 72 that correspond one-to-one with the movable posts 71. The movable posts 71 are slidably inserted into the strip holes 72 and can slide along the strip holes 72 toward the corresponding limiting posts 512. The bottom of the tooling table 4 is slidably connected with connecting rods 73 that correspond one-to-one with the limiting posts 512. Both connecting rods 73 are set along the extension direction of the strip holes 72 and are set opposite to each other.

[0055] Reference Figure 5 , Figure 7A guide rod 74 is fixedly provided on the tooling table 4. The guide rod 74 passes through the tooling table 4 in a vertical direction. In this embodiment, the pressure plate 522 is sleeved on the top of the guide rod 74. The guide rod 74 is provided with a first groove segment 751 and a second groove segment 752. The first groove segment 751 and the second groove segment 752 are connected. The first groove segment 751 is spirally arranged along the length direction of the guide rod 74, and the central angle corresponding to the first groove segment 751 is 90°. The second groove segment 752 is located below the first groove segment 751 and is arranged in a vertical direction. A guide block 76 is fixedly provided on the guide rod 74, which slides in the first groove segment 751 and the second groove segment 752. When the guide block 76 slides in the first groove segment 751, the pressure plate 522 rotates 90°. When the guide block 76 slides in the second groove segment 752, the pressure plate 522 slides in a vertical direction.

[0056] Reference Figure 8 , Figure 9 The pressure plate 522 is connected to the linear drive mechanism 521 via a rotating cylinder 77 to drive the pressure plate 522 to slide. In this embodiment, the rotating cylinder 77 includes a first cylinder 771 and a second cylinder 772. The first cylinder 771 is sleeved on the guide rod 74 and fixedly connected to the pressure plate 522. The first cylinder 771 slides through the tooling table 4 and protrudes outward at one end of its bottom extending from the tooling table 4 to form a protrusion. The second cylinder 772 is sleeved on the first cylinder 771 and has a slot for inserting the protrusion, so that the second cylinder 772 is rotatably connected to the first cylinder 771 and pulls the first cylinder 771 to slide. The second cylinder 772 has a sliding through hole for the connection between the guide rod 74 and the tooling table 4 to pass through. The output shaft of the linear drive mechanism 521 is fixedly connected to the second cylinder 772 to drive the second cylinder 772 to slide in the vertical direction.

[0057] When the linear drive mechanism 521 drives the pressure plate 522 to rise, the pressure plate 522 rises with the cooperation of the guide block 76 and the second groove section 752. As the pressure plate 522 rises, the guide block 76 slides from the second groove section 752 into the first groove section 751. With the cooperation of the guide block 76 and the first groove section 751, the pressure plate 522 rotates around the guide rod 74, causing the pressure plate 522 to deviate from the handle 6. This effectively avoids the pressure plate 522 from obstructing the loading and unloading of the handle 6, thereby improving the convenience of assembling and disassembling the handle 6.

[0058] Reference Figure 6 , Figure 8The bottom of the first cylinder 771 is provided with a cam 81, and a push rod 82 connected to the cam 81 is slidably connected to the bottom wall of the tooling table 4. The first cylinder 771 can drive the cam 81 to rotate, so that the cam 81 pushes the push rod 82 to slide. The push rod 82 is connected to the connecting rod 73 through a connector 83, so that the push rod 82 can drive the movable column 71 to press the handle 6 towards the corresponding limiting column 512. In this embodiment, the connector 83 includes an intermediate rod 831 and a transmission block 832. The intermediate rod 831 is slidably connected to the bottom wall of the tooling table 4. The sliding direction of the intermediate rod 831 is perpendicular to the sliding direction of the connecting rod 73. The intermediate rod 831 is provided with a first inclined surface 833 connected to the connecting rod 73. When the cam 81 drives the intermediate rod 831, the intermediate rod 831 drives the two connecting rods 73 to move away from each other through the first inclined surface 833, so that the connecting rod 73 drives the corresponding movable column 71 to press the handle 6 against the corresponding limiting column 512, thereby completing the pressing and fixing of the handle 6. The transmission block 832 is disposed between the intermediate rod 831 and the push rod 82. The push rod 82 can push the intermediate rod 831 to slide with the help of the transmission block 832. The intermediate rod 831 is provided with a second inclined surface 834. The transmission block 832 is provided with a third inclined surface 835 that fits against the second inclined surface 834. The push rod 82 can push the transmission block 832 to slide along the second inclined surface 834, thereby shortening the distance between the push rod 82 and the intermediate rod 831. The push rod 82 is provided with a telescopic spring 836 connected to the transmission block 832. The telescopic spring 836 can compress the third inclined surface 835 and the second inclined surface 834 to keep them stationary, thereby allowing the push rod 82 to push the intermediate rod 831 to slide.

[0059] When the handle 6 is placed between the limiting post 512 and the movable post 71, the pressure plate 522 moves down and rotates under the guidance of the first groove section 751, causing the first cylinder 771 to drive the cam 81 to rotate. The cam 81 pushes the push rod 82 to slide, and the push rod 82 squeezes the intermediate rod 831 to slide through the transmission block 832, so that the intermediate rod 831 can push the connecting rod 73 to slide. The connecting rod 73 drives the movable post 71 to slide, so that the movable post 71 presses the handle 6 tightly on the limiting post 512, thereby improving the firmness and stability of the handle 6 clamping. When fixing handles 6 of different widths, when the movable column 71 reaches its limit of movement, the pressure plate 522 still needs to continue to rotate. At this time, the push rod 82 pushes the transmission block 832 to slide along the second inclined plane 834. The transmission block 832 compresses the telescopic spring 836 to retract, and the push rod 82 and the middle rod 831 gradually approach each other, so that the pressure plate 522 can rotate above the handle 6, thereby realizing the clamping of handles 6 of different widths and improving the flexibility of clamping the handle 6 onto the tooling table 4.

[0060] The implementation principle of Example 2 is as follows: When the linear drive mechanism 521 drives the pressure plate 522 to descend, the pressure plate 522 rotates 90° under the cooperation of the guide block 76 and the first groove segment 751, so that the pressure plate 522 rotates above the handle 6. At the same time, the pressure plate 522 rotates and drives the first cylinder 771 to rotate. The first cylinder 771 drives the cam 81 to rotate. The cam 81 pushes the push rod 82 to slide. The push rod 82 squeezes the intermediate rod 831 to slide through the transmission block 832, so that the intermediate rod 831 can push the connecting rod 73 to slide. The connecting rod 73 drives the movable column 71 to slide, so that the movable column 71 presses the handle 6 tightly on the limiting column 512, thereby improving the firmness and stability of the handle 6 clamping. As the pressure plate 522 descends, the push rod 82 pushes the guide block 76 from the first groove 751 into the second groove 752. With the cooperation of the guide block 76 and the second groove 752, the pressure plate 522 descends vertically, thereby improving the convenience of installing and removing the handle 6.

[0061] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A three-dimensional hole processing device for automobile door handles, characterized in that: The assembly includes a CNC machining center (1), a drilling assembly (2), a chamfering assembly (3), a tooling table (4), and a fixing assembly (5). The CNC machining center (1) can be connected to the drilling assembly (2) and the chamfering assembly (3) respectively to drive the drilling assembly (2) and the chamfering assembly (3) to process the handle (6). The tooling table (4) is used to place the handle (6). The fixing assembly (5) is set on the tooling table (4) to fix the handle (6) on the tooling table (4). The fixing component (5) includes a limiting member (51) and a clamping member (52). The limiting member (51) forms a placement space for inserting the handle (6) so as to restrict the handle (6) from rotating on the tooling table (4). The clamping member (52) can press and fix the handle (6) on the tooling table (4). The limiting component (51) includes a limiting plate (511) and a plurality of limiting posts (512). Each of the limiting posts (512) is disposed on the tooling table (4). The plurality of limiting posts (512) are disposed on both sides of the handle (6) to limit the handle (6). The limiting plate (511) can contact the end of the handle (6) to limit the handle (6). The clamping component (52) includes a linear drive mechanism (521) and a pressure plate (522). The linear drive mechanism (521) is disposed on the tooling table (4) and connected to the pressure plate (522). The handle (6) can be located between the pressure plate (522) and the tooling table (4). The linear drive mechanism (521) can drive the pressure plate (522) to press the handle (6) onto the tooling table (4). A guide rod (74) is fixedly provided on the tooling table (4). The guide rod (74) passes through the pressure plate (522) and is slidably connected to the pressure plate (522). A first groove (751) and a second groove (752) are provided on the guide rod (74). A guide block (76) is provided on the pressure plate (522) that can slide in the first groove (751) and the second groove (752). The first groove (751) can guide the pressure plate (522) to rotate so that the pressure plate (522) is offset from the handle (6) directly above. The second groove (752) can guide the pressure plate (522) to slide in the vertical direction. The pressure plate (522) is connected to the linear drive mechanism (521) through a rotating cylinder (77) so that the pressure plate (522) can be driven to slide. The rotating cylinder (77) includes a first cylinder (771) fixedly connected to the pressure plate (522) and a second cylinder (772) connected to the linear drive mechanism (521). The second cylinder (772) is sleeved on the first cylinder (771) and rotatably connected to the first cylinder (771). The limiting post (512) located on one side of the handle (6) is a movable post (71). The movable post (71) is slidably connected to the tooling table (4). The tooling table (4) is slidably provided with a connecting rod (73) fixedly connected to the movable post (71). The first cylinder (771) is provided with a cam (81). The tooling table (4) is slidably provided with a push rod (82) connected to the cam (81). The first cylinder (771) can drive the cam (81) to rotate so as to push the push rod (82) to slide. The push rod (82) and the connecting rod (73) are connected by a connector (83) so that the push rod (82) can drive the movable post (71) to press the handle (6) towards the corresponding limiting post (512).

2. The three-dimensional hole processing equipment for automobile door handles according to claim 1, characterized in that: The CNC machining center (1) includes a moving frame (11) and a machining head (12). The moving frame (11) is connected to the machining head (12) so as to drive the machining head (12) to move. The machining head (12) is detachably connected to the drilling assembly (2) and the chamfering assembly (3) respectively, and can drive the drilling assembly (2) and the chamfering assembly (3) to rotate.

3. The three-dimensional hole processing equipment for automobile door handles according to claim 2, characterized in that: The drilling assembly (2) includes a first tool holder (21) and a drill bit (22), the drill bit (22) being mounted on the first tool holder (21), and the first tool holder (21) being detachably and fixedly connected to the processing head (12).

4. The three-dimensional hole processing equipment for automobile door handles according to claim 3, characterized in that: The chamfering assembly (3) includes a second tool holder (31) and a chamfering cutter (32). The chamfering cutter (32) is disposed on the second tool holder (31), and the second tool holder (31) can be detachably and fixedly connected to the machining head (12).

5. The three-dimensional hole processing equipment for automobile door handles according to claim 2, characterized in that: The CNC machining center (1) is equipped with a mechanical tool magazine (13) and a tool changing robot (14). The drilling assembly (2) and the chamfering assembly (3) are both placed in the mechanical tool magazine (13). The tool changing robot (14) can take the drilling assembly (2) or the chamfering assembly (3) out of the mechanical tool magazine (13) and install it on the machining head (12), and remove the drilling assembly (2) or the chamfering assembly (3) from the machining head (12) and place it in the mechanical tool magazine (13).

6. The three-dimensional hole processing equipment for automobile door handles according to claim 1, characterized in that: The connecting member (83) includes a middle rod (831) and a transmission block (832). The middle rod (831) is slidably connected to the tooling table (4). The middle rod (831) has a first inclined surface (833) connected to the connecting rod (73) to push the connecting rod (73) to slide. The transmission block (832) is disposed between the middle rod (831) and the push rod (82). The push rod (82) can push the middle rod (831) to slide with the help of the transmission block (832). The middle rod (831) has a second inclined surface (834). The push rod (82) is provided with a third inclined surface (835) that fits against the second inclined surface (834). The push rod (82) can push the transmission block (832) to slide along the second inclined surface (834) so ​​that the distance between the push rod (82) and the intermediate rod (831) is shortened. The push rod (82) is provided with a telescopic spring (836) connected to the transmission block (832). The telescopic spring (836) can compress the third inclined surface (835) and the second inclined surface (834) to keep them stationary so that the push rod (82) can push the intermediate rod (831) to slide.

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