Three-dimensional hole site machining tool for automobile door handle

Abstract

The invention relates to a three-dimensional hole site machining tool for an automobile door handle, and relates to the technical field of handle machining equipment, the three-dimensional hole site machining tool comprises a numerical control machining center, a drilling assembly, a chamfering assembly, a tool table and a fixing assembly, and the numerical control machining center can be connected with the drilling assembly and the chamfering assembly through a mounting assembly; the driving assembly is arranged on the drilling assembly to drive the drilling assembly and the chamfering assembly to machine a handle, the tool table is used for placing the handle, and the fixing assembly is arranged on the tool table so that the handle can be fixed to the tool table; the fixing assembly comprises a limiting piece and a pressing piece, a containing space allowing the handle to be inserted is formed in the limiting piece so that the handle can be limited to rotate on the tool table, and the pressing piece can press and fix the handle to the tool table. The drilling and chamfering integrated machining device has the advantages that integrated machining of drilling and chamfering operation is achieved, multiple times of clamping of a handle piece in different working procedures are reduced, accumulative errors caused by repeated clamping are effectively reduced, and the effect of hole site machining precision is improved.

Description

Technical Field

[0001] The present application relates to the technical field of handle processing equipment, and in particular to a three-dimensional hole processing tool for automobile door handles. Background Art

[0002] The car handle is responsible for opening and closing the car door. When processing the car handle, it is necessary to use drilling equipment to process the mounting hole on the handle, and then chamfer the hole end of the mounting hole to facilitate the subsequent installation of the handle.

[0003] When processing the handle, the handle is first drilled by a drilling device, and then the handle is placed on a chamfering device for chamfering. The chamfering and drilling are two separate processes, so that after the handle is clamped twice, the hole position may shift due to looseness of the workpiece or machine tool error, which in turn leads to large errors and low precision in the processing of the mounting holes on the handle. Summary of the invention

[0004] In order to improve the problem of large errors and low precision in machining the mounting holes on the handles due to frequent clamping of the handles, the present application provides a three-dimensional hole machining tool for automobile door handles.

[0005] The three-dimensional hole processing tooling for automobile door handles provided in the present application adopts the following technical solution: A three-dimensional hole processing tool for an automobile door handle comprises a CNC machining center, a drilling assembly, a chamfering assembly, a tooling table and a fixing assembly. The CNC machining center can be respectively connected to the drilling assembly and the chamfering assembly to drive the drilling assembly and the chamfering assembly to process the handle. The tooling table is for placing the handle. The fixing assembly is arranged on the tooling table to fix the handle on the tooling table. The fixing assembly comprises a limiter and a clamping member. A placement space for inserting the handle is formed in the limiter to limit the rotation of the handle on the tooling table. The clamping member can clamp and fix the handle on the tooling table.

[0006] By adopting the above technical solution, when processing the car handle, the handle is clamped on the workbench, and the CNC machining center drives the drilling assembly to drill the handle to form a mounting hole. After the 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 hole. After the chamfering is completed, the handle is removed from the workbench to complete the processing of the three-dimensional hole position of the car door handle, realizing the integrated processing of drilling and chamfering operations, reducing the multiple clamping of the handle parts 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 limiter and the clamping member ensures the stability and accurate positioning of the handle during the processing process, further improving the processing quality.

[0007] Preferably, the CNC machining center includes a movable frame and a machining head, wherein the movable frame is connected to the machining head so as to be able to drive the machining head to move, and the machining head is detachably connected to the drilling assembly and the chamfering assembly, respectively, and can drive the drilling assembly and the chamfering assembly to rotate.

[0008] By adopting the above technical solution, the coordinated use of the mobile frame and the processing head of the CNC machining center can realize the precise movement of the drilling component and the chamfering component in three-dimensional space, ensuring the hole processing accuracy of the handle at different positions. At the same time, the detachable connection design between the processing head and the drilling component and the chamfering component facilitates the rapid replacement of tools and improves the processing efficiency. In addition, the ability of the processing head to drive the rotation of the drilling component and the chamfering component ensures the consistency and stability of the drilling and chamfering operations, further improving the processing quality.

[0009] Preferably, the drilling assembly comprises a first tool holder and a drill bit, the drill bit is mounted on the first tool holder, and the first tool holder can be detachably fixedly connected to the processing head.

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

[0011] Preferably, the chamfering assembly comprises a second tool holder and a chamfering milling cutter, the chamfering milling cutter is arranged on the second tool holder, and the second tool holder can be detachably fixedly connected to the processing head.

[0012] By adopting the above technical solution, the chamfering cutter is arranged on the second tool holder, which ensures the stability and accuracy of the chamfering operation. The second tool holder can be detachably fixedly connected to the processing head, which facilitates the replacement of different processing tools, reduces the replacement time, and improves production efficiency.

[0013] Preferably, the CNC machining center is provided with a mechanical tool magazine and a tool changing robot, and the drilling assembly and the chamfering assembly are both placed in the mechanical tool magazine. The tool changing robot can take out the drilling assembly or the chamfering assembly from the mechanical tool magazine and install it on the machining head, and remove the drilling assembly or the chamfering assembly from the machining head and place it in 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 manipulator, which can automatically complete the replacement of drilling components and chamfering components, improving the processing efficiency and automation. At the same time, it reduces manual intervention, reduces the risk of operating errors, and further ensures processing accuracy.

[0015] Preferably, the limiting member includes a limiting plate and a plurality of limiting columns, each of the limiting columns is arranged on the workbench, and the plurality of limiting columns are arranged on both sides of the handle to be able to limit the handle, and the limiting plate can contact with the end of the handle to be able to limit the handle.

[0016] By adopting the above technical solution, the limit plate and multiple limit columns work together to effectively limit the position of the handle on the workbench, preventing it from moving or rotating during processing, thereby ensuring the accuracy and stability of hole processing. At the same time, the design of the limit columns on both sides of the handle further improves the positioning accuracy of the handle, reduces the error caused by the looseness of the workpiece, and improves the quality of the final product.

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

[0018] By adopting the above technical solution, the handle is stably fixed, ensuring that the handle will not be offset during processing, and improving the accuracy and reliability of hole processing. At the same time, the design simplifies the structure of the fixing device, reduces production costs, and facilitates operators to quickly install and remove the handle, thereby improving work efficiency.

[0019] Preferably, a guide rod is fixedly provided on the workbench, the guide rod is passed through the pressure plate and is slidably connected to the pressure plate, the guide rod is provided with a first groove section and a second groove section which are connected to each other, the pressure plate is provided with a guide block which can slide in the first groove section and the second groove section, the first groove section can guide the pressure plate to rotate so that the pressure plate deviates from directly above the handle, the second groove section can guide the pressure plate to slide in a vertical direction, and 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 lift, the pressure plate is lifted with the cooperation of the guide block and the second slot section. As the pressure plate is lifted, the guide block slides from the second slot section into the first slot section. With the cooperation of the guide block and the first slot section, the pressure plate rotates around the guide rod, so that the pressure plate deviates from the handle, which can effectively avoid the pressure plate from blocking the loading and unloading of the handle, thereby improving the convenience of installing and disassembling the handle.

[0021] Preferably, the rotating cylinder includes a first cylinder body fixedly connected to the pressure plate and a second cylinder body connected to the linear drive mechanism, the second cylinder body is sleeved on the first cylinder body and rotatably connected to the first cylinder body; the limiting column located on one side of the handle is a movable column, the movable column is slidably connected to the workbench, a connecting rod fixedly connected to the movable column is slidably provided on the workbench, a cam is provided on the first cylinder body, a push rod connected to the cam is slidably provided on the workbench, the first cylinder body 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 connecting piece, so that the push rod can drive the movable column to squeeze the handle toward the corresponding limiting column.

[0022] By adopting the above technical solution, when the handle is placed between the limit column and the movable column, the pressure plate moves downward and rotates under the guidance of the first groove section, so that the first cylinder drives the cam to rotate, the cam pushes the push rod to slide, the push rod drives the connecting rod to slide through the connecting piece, and the connecting rod drives the movable column to slide, so that the movable column presses the handle tightly against the limit column, 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 workbench, the intermediate rod is provided with a first inclined surface connected to the connecting rod so as to push the connecting rod to slide, the transmission block is arranged between the intermediate rod and the push rod, the push rod can push the intermediate rod to slide with the aid of the transmission block, the intermediate rod is provided with a second inclined surface, the transmission block is provided with a third inclined surface that fits with the second inclined surface, the push rod can push the transmission block to slide along the second inclined surface so as to shorten the distance between the push rod and the intermediate rod, the push rod is provided with a telescopic spring connected to the transmission block, the telescopic spring can squeeze the third inclined surface and the second inclined surface to keep 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, the push rod squeezes the middle rod to slide through the transmission block, so that the middle rod can push the connecting rod to slide, thereby driving the movable column. When fixing handles of different widths, when the movable column reaches the limit of movement, the pressure plate still needs to continue to rotate. At this time, the push rod pushes the transmission block to slide along the second inclined surface, the transmission block squeezes the telescopic spring to contract, and the push rod and the middle rod gradually approach each other, so that the pressure plate can rotate to the top of the handle, thereby realizing the clamping of handles of different widths and improving the flexibility of clamping the handles on the workbench.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. The integrated processing of drilling and chamfering operations is realized, which reduces the multiple clamping of the handle parts between different processes, effectively reduces the cumulative error caused by repeated clamping, and improves the accuracy of hole processing. At the same time, the design of the limiter and the clamping part ensures the stability and accurate positioning of the handle during the processing, further improving the processing quality; 2. The limit plate and multiple limit columns work together to effectively limit the position of the handle on the workbench to prevent it from moving or rotating during processing, thereby ensuring the accuracy and stability of hole processing; at the same time, the design of the limit columns on both sides of the handle further improves the positioning accuracy of the handle, reduces the error caused by the loosening of the workpiece, and improves the quality of the final product; 3. When the linear drive mechanism drives the pressure plate to lift, the pressure plate is lifted with the cooperation of the guide block and the second slot section. As the pressure plate is lifted, the guide block slides from the second slot section into the first slot section. With the cooperation of the guide block and the first slot section, the pressure plate rotates around the guide rod, so that the pressure plate deviates from the handle, which can effectively avoid the pressure plate from blocking the loading and unloading of the handle, thereby improving the convenience of the handle assembly and disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic structural diagram of the three-dimensional hole processing tooling for the automobile door handle of Example 1 of the present application.

[0027] Figure 2 It is a schematic diagram used to show the structure of CNC machining center.

[0028] Figure 3 yes Figure 2 Enlarged view of part A in the middle.

[0029] Figure 4 It is a schematic diagram for showing the structure of the limiting parts and the clamping parts.

[0030] Figure 5 It is a schematic structural diagram of a three-dimensional hole processing tool for a car door handle according to Example 2 of the present application.

[0031] Figure 6This is the bottom view of the workbench.

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

[0033] Figure 8 is along Figure 6 Sectional view along the CC line.

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

[0035] Description of reference numerals: 1. CNC machining center; 11. Mobile frame; 12. Machining head; 13. Mechanical tool magazine; 14. Tool changing manipulator; 2. Drilling assembly; 21. First tool holder; 22. Drill bit; 3. Chamfering assembly; 31. Second tool holder; 32. Chamfering cutter; 4. Workbench; 5. Fixing assembly; 51. Limiting member; 511. Limiting plate; 512. Limiting column; 52. Pressing member; 521. Linear drive mechanism; 522. Pressing plate; 6. Handle; 71. Movable column; 72. Strip hole; 73. Connecting rod; 74. Guide rod; 751. First slot section; 752. Second slot 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. Tool frame. DETAILED DESCRIPTION

[0036] The following is combined with Figure 1-9 This application is described in further detail.

[0037] The embodiment of the present application discloses a three-dimensional hole processing tool for a car door handle.

[0038] Example 1 Reference Figure 1 , Figure 2 The three-dimensional hole processing tooling of the automobile door handle includes a CNC machining center 1, a drilling component 2, a chamfering component 3, a tooling table 4 and a fixing component 5. The CNC machining center 1 can be connected to the drilling component 2 and the chamfering component 3 respectively, and drive the drilling component 2 and the chamfering component 3 to rotate, and perform drilling and chamfering processing on the handle 6. The tooling table 4 is for placing the handle 6, and the fixing component 5 is arranged on the tooling table 4. There are three groups of fixing components 5 in this embodiment. Each group of fixing components 5 includes two groups of limiting members 51 and a group of clamping members 52. Each group of limiting members 51 forms a placement space for inserting the handle 6, which limits the handle 6 from rotating in a plane on the tooling table 4. Each group of clamping members 52 can simultaneously clamp and fix two handles 6 on the tooling table 4. Three groups of fixing components 5 can clamp six handles 6 on the tooling table 4 at a time.

[0039] When processing the automobile handle 6, the handle 6 is clamped on the workbench 4, and the CNC machining center 1 drives the drilling component 2 to drill the handle 6 to form a mounting hole. After the drilling is completed, the drilling component 2 is replaced with the chamfering component 3, and the CNC machining center 1 drives the chamfering component 3 to chamfer the mounting hole. After the chamfering is completed, the handle 6 is removed from the workbench 4 to complete the processing of the three-dimensional hole position of the automobile door handle 6, realizing the integrated processing of drilling and chamfering operations, reducing the multiple clamping of the handle 6 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 limiter 51 and the clamping member 52 ensures the stability and accurate positioning of the handle 6 during the processing process, further improving the processing quality.

[0040] Reference Figure 2 , Figure 3 In this embodiment, the drilling assembly 2 and the chamfering assembly 3 are respectively two groups. The drilling assembly 2 includes a first tool holder 21 and a drill bit 22. The drill bit 22 is installed on the first tool holder 21. The two drill bits 22 have different diameters and respectively process a through hole and a countersunk hole on the handle 6. 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 respectively chamfer the orifice ends of the through hole and the countersunk hole. The first tool holder 21 and the second tool holder 31 have the same structure, both of which are turret tool holders.

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

[0042] Reference Figure 2The tool frame 9 is provided with a mechanical tool magazine 13 and a tool changing manipulator 14 on one side of the CNC machining center 1. The mechanical tool magazine 13 in this embodiment is a turret-type tool magazine, and the tools are installed on the turret. The tool switching is achieved by the rotation of the turret, and the structure is simple. The drilling assembly 2 and the chamfering assembly 3 are both placed in the mechanical tool magazine 13, and the drill bit 22 and the chamfering cutter 32 are replaced by the mechanical tool magazine 13. The tool changing manipulator is set on the tool frame 9. When the tool needs to be changed, the processing head 12 moves to the other side of the tool changing manipulator 14. One station of the manipulator accurately grabs the tool in the tool magazine and transfers it to the spindle position. Another station removes the old tool on the spindle and accurately puts the replaced tool back to the designated position of the tool magazine. At the same time, the new tool is installed into the spindle, thereby completing the exchange operation of the new and old tools.

[0043] When replacing the tool, the automatic tool changing system (ATC) of the CNC machine tool is used for control. The automatic tool changing system (ATC) of the CNC machine tool includes the numerical control system (CNC), programmable logic controller (PLC), sensor, drive device, safety protection device, and human-machine interface (HMI).

[0044] The CNC system is the core of the automatic tool change control system. It receives the tool change instructions in the machining program and schedules the actions of the tool magazine, manipulator and spindle according to the program requirements. The CNC system accurately controls the tool change process through internal software algorithms to ensure that the automatic tool exchange can be completed efficiently and accurately.

[0045] The programmable logic controller (PLC) is used to realize the logic control of the tool changing system. It receives the instructions of the CNC system and controls the specific actions in the tool changing process. The PLC can process various sensor signals, such as the tool magazine position, the robot status, etc., to ensure the logical order and safety of the tool changing process.

[0046] Sensors are used to detect various status information during the tool change process, such as tool position, tool magazine status, robot movement, etc. These sensors feed back the detected information to the control system so that the control system can adjust and control according to the actual situation.

[0047] The drive device includes an electric motor, pneumatic components or hydraulic components, which are used to drive the tool magazine, manipulator and tool changing mechanism. These drive devices complete the picking, delivery and installation of tools according to the instructions of the control system.

[0048] Safety protection devices are an important part of the control system, which include sensors, limit switches, emergency stop buttons, etc. These devices are used to monitor the operating status of the tool changing system to ensure that it can stop running in time when a fault or abnormal situation occurs to prevent accidents.

[0049] The human-machine interface (HMI) is used for interaction between operators and the control system. Operators can input tool data, monitor tool change status, and perform fault diagnosis through the HMI.

[0050] A cutting fluid circulation system is provided on the CNC machining center 1. The water 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 processes the handle 6, the cutting fluid circulation system sprays the cutting fluid from the water 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 a plurality of limiting columns 512. Two groups of limiting members 51 share a limiting plate 511. The limiting plate 511 is installed at the edge of the tooling table 4. The plurality of limiting columns 512 are divided into two groups. The total number of the two groups of limiting columns 512 is at least three, and they are arranged on both sides of the handle 6, so that a placement space is formed between the two groups of limiting columns 512. In this embodiment, each limiting column 512 is fixedly connected to the tooling table 4. The limiting plate 511 can contact the end of the handle 6 to limit the handle 6. When installing the handle 6, the handle 6 is inserted into the placement space, and the end of the handle 6 is fitted with the limiting plate 511 to complete the placement of the handle 6, thereby improving the accuracy and convenience of positioning the handle 6. The limiting plate 511 and the plurality of limiting columns 512 work together to effectively limit the position of the handle 6 on the tooling table 4, preventing it from moving or rotating during the processing, thereby ensuring the accuracy and stability of the hole processing.

[0052] Reference Figure 4 The clamping member 52 in this embodiment includes a linear drive mechanism 521 and a pressing plate 522. The linear drive mechanism 521 in this embodiment includes but is not limited to one of a linear cylinder, a linear hydraulic cylinder, and a linear motor. The linear drive mechanism 521 is arranged at the bottom of the tooling table 4. The driving shaft of the linear drive mechanism 521 passes through the tooling table 4. The pressing plate 522 is fixedly mounted on one end of the driving shaft of the linear drive mechanism 521 passing through the tooling table 4. Both ends of the pressing plate 522 extend above the two coaxial placement spaces to ensure that the pressing plate 522 can press and fix the two handles 6 on the tooling table 4. The stable fixation of the handles 6 is achieved, ensuring that the handles 6 will not be offset during the processing, and improving the accuracy and reliability of the hole processing. At the same time, the design simplifies the structure of the fixing device, reduces the production cost, and facilitates the operator to quickly install and remove the handles 6, thereby improving work efficiency.

[0053] The implementation principle of Example 1 is as follows: when processing the automobile handle 6, the handles 6 are first placed one by one in the placement space surrounded by the limit column 512, the linear drive mechanism 521 drives the pressing plate 522 to press and fix the handle 6 on the workbench 4, and the clamping of the handle 6 on the workbench 4 is completed. The CNC machining center 1 drives the drill bit 22 to drill the handle 6 to form a mounting hole. After the drilling is completed, the tool changing robot 14 replaces the drill bit 22 to realize the processing of the through hole and the countersunk hole on the handle 6. After the hole processing is completed, the drill hole is Component 2 is replaced with chamfering component 3, and CNC machining center 1 drives chamfering component 3 to chamfer the mounting hole. After chamfering is completed, linear drive mechanism 521 drives pressure plate 522 to rise, releases the fixation of pressure plate 522 on handle 6, and then removes handle 6 from workbench 4, completing the processing of the three-dimensional hole position of automobile door handle 6, realizing the integrated processing of drilling and chamfering operations, reducing the multiple clamping of handle 6 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 limiter 51 and clamping member 52 ensures the stability and accurate positioning of handle 6 during the processing, further improving the processing 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 groups of limit columns 512 of the four groups of limit columns 512 corresponding to each pressure plate 522 are set as movable columns 71, and each group of movable columns 71 is slidably connected to the workbench 4. The workbench 4 is provided with strip holes 72 corresponding to the movable columns 71 one by one. The movable columns 71 are slidably inserted in the strip holes 72 and can slide toward the limit columns 512 on the corresponding side along the strip holes 72. The bottom of the workbench 4 is slidably connected with connecting rods 73 corresponding to the limit columns 512 one by one. The two connecting rods 73 are both arranged along the extension direction of the strip holes 72 and are arranged opposite to each other.

[0055] Reference Figure 5 , Figure 7A guide rod 74 is fixedly provided on the workbench 4, and the guide rod 74 is penetrated on the workbench 4 along the vertical direction. The pressing plate 522 in this embodiment is sleeved on the top of the guide rod 74, and a first groove section 751 and a second groove section 752 are provided on the guide rod 74. The first groove section 751 and the second groove section 752 are connected and arranged. The first groove section 751 is spirally arranged along the length direction of the guide rod 74, and the central angle corresponding to the first groove section 751 is 90°. The second groove section 752 is located below the first groove section 751 and is arranged along the vertical direction. A guide block 76 sliding in the first groove section 751 and the second groove section 752 is fixedly provided on the guide rod 74. When the guide block 76 slides in the first groove section 751, the pressing plate 522 rotates 90°, and when the guide block 76 slides in the second groove section 752, the pressing plate 522 slides in the vertical direction.

[0056] Reference Figure 8 , Fig. 9 , the pressing plate 522 is connected to the linear drive mechanism 521 through the rotating cylinder 77 to drive the pressing plate 522 to slide. The rotating cylinder 77 in this embodiment 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 pressing plate 522. The first cylinder 771 is slidably penetrated on the workbench 4, and one end extending out of the workbench 4 at the bottom is convex to form a convex portion. The second cylinder 772 is sleeved on the first cylinder 771 and is provided with a slot for inserting the convex portion, 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 is provided with a sliding through hole for the connecting portion of the guide rod 74 and the workbench 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 along the vertical direction.

[0057] When the linear drive mechanism 521 drives the pressure plate 522 to lift, the pressure plate 522 is lifted with the cooperation of the guide block 76 and the second slot section 752. As the pressure plate 522 is lifted, the guide block 76 slides from the second slot section 752 into the first slot section 751. With the cooperation of the guide block 76 and the first slot section 751, the pressure plate 522 rotates around the guide rod 74, so that the pressure plate 522 deviates from the handle 6, which can effectively avoid the pressure plate 522 from blocking the loading and unloading of the handle 6, thereby improving the convenience of assembly and disassembly of 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 workbench 4. The first cylinder 771 can drive the cam 81 to rotate, so that the cam 81 pushes the push rod 82 to slide, and the push rod 82 is connected to the connecting rod 73 through a connecting piece 83, so that the push rod 82 can drive the movable column 71 to press the handle 6 toward the corresponding limit column 512. The connecting piece 83 in this embodiment includes an intermediate rod 831 and a transmission block 832. The intermediate rod 831 is slidably connected to the bottom wall of the workbench 4, and 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 to drive, the intermediate rod 831 drives the two connecting rods 73 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 limit column 512, thereby completing the pressing and fixing of the handle 6. The transmission block 832 is arranged 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 is provided with a second inclined surface 834. The transmission block 832 is provided with a third inclined surface 835 that fits with 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 middle 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 squeeze the third inclined surface 835 and the second inclined surface 834 to keep still, so that the push rod 82 pushes the middle rod 831 to slide.

[0059] When the handle 6 is placed between the limiting column 512 and the movable column 71, the pressure plate 522 moves downward and rotates under the guidance of the first groove section 751, so that the first cylinder 771 drives the cam 81 to rotate, and 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, and the connecting rod 73 drives the movable column 71 to slide, so that the movable column 71 presses the handle 6 against the limiting column 512, thereby improving the firmness and stability of the clamping of the handle 6. When fixing handles 6 of different widths, when the movable column 71 reaches the 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 surface 834, and the transmission block 832 squeezes the telescopic spring 836 to contract. The push rod 82 and the intermediate rod 831 gradually approach each other, so that the pressure plate 522 can be rotated to the top of the handle 6, thereby realizing the clamping of handles 6 of different widths and improving the flexibility of clamping the handle 6 on the workbench 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° with the cooperation of the guide block 76 and the first groove section 751, so that the pressure plate 522 rotates to the top of the handle 6. When the pressure plate 522 rotates, it drives the first cylinder 771 to rotate, and the first cylinder 771 drives the cam 81 to rotate. The cam 81 pushes the push rod 82 to slide, and the push rod 82 squeezes the middle rod 831 to slide through the transmission block 832, so that the middle rod 831 can push the connecting rod 73 to slide, and the connecting rod 73 drives the movable column 71 to slide, so that the movable column 71 presses the handle 6 tightly on the limit column 512, thereby improving the firmness and stability of the clamping of the handle 6. As the push rod 82 pushes the pressing plate 522 to descend, the guide block 76 slides from the first slot section 751 into the second slot section 752. With the cooperation of the guide block 76 and the second slot section 752, the pressing plate 522 descends in the vertical direction, thereby improving the convenience of assembling and disassembling the handle 6.

[0061] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A three-dimensional hole processing tool for a car door handle, characterized by: The invention comprises a numerical control machining center (1), a drilling assembly (2), a chamfering assembly (3), a tooling table (4) and a fixing assembly (5); the numerical control 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 a handle (6); the tooling table (4) is used to place the handle (6); and the fixing assembly (5) is arranged on the tooling table (4) to fix the handle (6) on the tooling table (4); The fixing assembly (5) comprises a limiting member (51) and a pressing member (52); a placement space for inserting the handle (6) is formed in the limiting member (51) so as to limit the rotation of the handle (6) on the workbench (4); and the pressing member (52) can press and fix the handle (6) on the workbench (4).

2. The three-dimensional hole processing tool for automobile door handle according to claim 1 is characterized in that: The CNC machining center (1) comprises a movable frame (11) and a machining head (12); the movable frame (11) is connected to the machining head (12) so as to be able 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 is able to drive the drilling assembly (2) and the chamfering assembly (3) to rotate.

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

4. The three-dimensional hole processing tool for automobile door handle according to claim 3 is characterized in that: The chamfering assembly (3) comprises a second tool seat (31) and a chamfering milling cutter (32); the chamfering milling cutter (32) is arranged on the second tool seat (31); and the second tool seat (31) can be detachably fixedly connected to the processing head (12).

5. The three-dimensional hole processing tool for automobile door handle according to claim 2, characterized in that: The CNC machining center (1) is provided 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) is capable of taking out the drilling assembly (2) or the chamfering assembly (3) from the mechanical tool magazine (13) and installing it on the machining head (12); and removing the drilling assembly (2) or the chamfering assembly (3) from the machining head (12) and placing it in the mechanical tool magazine (13).

6. The three-dimensional hole processing tool for automobile door handle according to claim 1, characterized in that: The limiting member (51) comprises a limiting plate (511) and a plurality of limiting columns (512), each of the limiting columns (512) being arranged on the tooling table (4), and the plurality of limiting columns (512) being arranged on both sides of the handle (6) so as to limit the handle (6), and the limiting plate (511) being able to contact with the end of the handle (6) so as to limit the handle (6).

7. The three-dimensional hole processing tool for automobile door handle according to claim 6, characterized in that: The clamping member (52) comprises a linear drive mechanism (521) and a pressing plate (522); the linear drive mechanism (521) is arranged on the tooling table (4) and connected to the pressing plate (522); the handle (6) can be located between the pressing plate (522) and the tooling table (4); and the linear drive mechanism (521) can drive the pressing plate (522) to press the handle (6) onto the tooling table (4).

8. The three-dimensional hole processing tool for automobile door handle according to claim 7, characterized in that: A guide rod (74) is fixedly provided on the workbench (4), and the guide rod (74) is inserted into the pressure plate (522) and is slidably connected to the pressure plate (522). A first groove section (751) and a second groove section (752) which are connected to each other are provided on the guide rod (74), and a guide block (76) which can slide in the first groove section (751) and the second groove section (752) is provided on the pressure plate (522). The first groove section (751) can guide the pressure plate (522) to rotate so that the pressure plate (522) deviates from the top of the handle (6), and the second groove section (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 as to drive the pressure plate (522) to slide.

9. The three-dimensional hole processing tool for automobile door handle according to claim 8, characterized in that: The rotating cylinder (77) comprises 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 is rotatably connected to the first cylinder (771); The limiting column (512) located on one side of the handle (6) is a movable column (71), and the movable column (71) is slidably connected to the workbench (4). A connecting rod (73) fixedly connected to the movable column (71) is slidably provided on the workbench (4). A cam (81) is provided on the first cylinder (771). A push rod (82) connected to the cam (81) is slidably provided on the workbench (4). 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 via a connecting piece (83) so that the push rod (82) can drive the movable column (71) to squeeze the handle (6) toward the corresponding limiting column (512).

10. The three-dimensional hole processing tool for automobile door handle according to claim 9, characterized in that: The connecting member (83) comprises an intermediate rod (831) and a transmission block (832). The intermediate rod (831) is slidably connected to the workbench (4). The intermediate rod (831) is provided with a first inclined surface (833) connected to the connecting rod (73) so as to push the connecting rod (73) to slide. The transmission block (832) is arranged 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 first inclined surface (834) connected to the connecting rod (73) so as to push the connecting rod (73) to slide. A third inclined surface (835) is provided on the push rod (82) and is in contact with the second inclined surface (834), and 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. A telescopic spring (836) is provided on the push rod (82) and is connected to the transmission block (832), and the telescopic spring (836) can squeeze 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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