Buffer cylinder drilling and tapping machine and processing method thereof

Abstract

The application discloses a buffer cylinder drilling and tapping machine, which comprises a rack with a workbench, a feeding device, a clamping device, an axial pushing mechanism, a drilling device and a tapping mechanism. The buffer cylinder head is sleeved to the head of the tapping mechanism when the third through hole and the fourth through hole are machined, and the coaxiality of the buffer cylinder and the head of the tapping mechanism is confirmed. The buffer cylinder drilling and tapping machine adopts single clamping and fixing, and machining of the third through hole and the inner thread of the center hole is realized, so that product precision and machining efficiency are improved.

Description

Technical Field

[0001] This invention relates to the field of elevator component processing technology, specifically to a buffer cylinder drilling and tapping machine and its processing method. Background Technology

[0002] like Figure 1 As shown, the buffer cylinder to be processed according to this invention is a tubular component with a first through hole 101, a second through hole 102, a third through hole 103, and a fourth through hole 104 on its side wall. Internal threads are required to be machined inside the central hole of the tubular component. Currently, during processing, batch clamping is required, followed by drilling each hole individually. After drilling, the component is repositioned and clamped again for tapping the internal threads. This processing method has the following disadvantages: 1. Because multiple clamping operations are required for each processing step, the reference point during processing is deviated, thus reducing the accuracy of the final product. 2. The processing efficiency is low, requiring manual clamping and processing, with a daily processing quantity of less than 500 pieces. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a buffer cylinder drilling and tapping machine that uses a single clamping and fixing to achieve the machining of the third through hole and the internal thread machining of the center hole, thereby increasing product accuracy and machining efficiency.

[0004] The technical solution of the present invention is to provide a drilling and tapping machine for buffer cylinders with the following structure, including a frame with a worktable, characterized in that: it further includes a feeding device for moving the buffer cylinders arranged in sequence one by one to the processing station by a manipulator using a clamping cylinder; a clamping device for fixing the buffer cylinders moved from the feeding device and moving laterally along the X-axis of the worktable; an axial pushing mechanism for axially pushing the buffer cylinders on the clamping device forward to abut against the axial positioning device for axial positioning; and drilling devices respectively provided at the first station. The system comprises a first drilling mechanism, a second drilling mechanism at a second workstation, a third drilling mechanism at a third workstation, and a fourth drilling mechanism at a fourth workstation. The first drilling mechanism is used to process the first through hole, the second drilling mechanism is used to process the second through hole, the third drilling mechanism is used to process the third through hole, and the fourth drilling mechanism is used to process the fourth through hole. The tapping mechanism is used to process the internal thread of the center hole of the head of the buffer cylinder. Simultaneously, when processing the third and fourth through holes, the buffer cylinder is fitted onto the head of the tapping mechanism to ensure that the buffer cylinder and the head of the tapping mechanism are coaxial.

[0005] The feeding device includes a receiving cavity for several buffer cylinders arranged horizontally from bottom to top. A clamping cylinder is provided at the top of the feeding device. The clamping cylinder grabs the top buffer cylinder downward and then resets it upward, moves along the Y-axis to the top of the clamping device, and finally places it downward onto the surface of the arc groove of the clamping device to achieve Y-direction limiting. The position of the receiving cavity and the position of the arc groove of the clamping device are on the same X coordinate. The clamping cylinder only needs to pick up and release material along the Z-axis and move along the Y-axis.

[0006] The axial pushing mechanism includes a cylinder and a push rod. The push rod is located at the rear of the worktable. In the working chamber, the piston rod of the cylinder pushes the push rod forward, which pushes the buffer cylinder body to the axial positioning device.

[0007] The drilling device has a first drilling mechanism and a third drilling mechanism drilling along the Z-axis, and a second drilling mechanism and a fourth drilling mechanism drilling along the Y-axis. The clamping device has three working stations on the worktable: a first station for clamping the product, a second station for machining the first and third through holes, a third station for machining the second and fourth through holes, and a fourth station for machining internal threads. During machining, the clamping device moves sequentially to the first, second, third, and fourth stations, and returns to the first station after machining at the fourth station.

[0008] The tapping mechanism includes a drive motor, a working end, and a working head. The output shaft of the drive motor passes through the working head and is connected to the working end. The output shaft of the drive motor is located in the long slot of the working head and is radially adjustable. A push cylinder is provided in the working head. The movable rod of the push cylinder pushes the output shaft of the drive motor to move in the long slot and achieves positioning after movement.

[0009] After processing is completed, the clamping device is reset to the first station, the clamping device is released and at the same time the buffer cylinder is moved backward along the X-axis, away from the axial positioning device.

[0010] The processing method of the buffer cylinder drilling and tapping machine includes the following steps: (1) The clamping cylinder moves to the top of the accommodating cavity and grabs the buffer cylinder at the top of the accommodating cavity 8 downwards. After clamping, it moves upwards to the position. Then, it moves along the Y-axis to the top of the base plate. Then, it places the buffer cylinder downwards and releases it. Finally, the clamping cylinder moves upwards and waits for the buffer cylinder to be processed before taking out the material. (2) The cylinder pushes the push rod to move the buffer cylinder forward to the positioning groove on the base plate. Then, the two clamping cylinders 10 press down. (3) The base plate moves forward, and the first drilling mechanism and the third drilling mechanism complete the drilling at the same time. (4) The base plate moves forward again, and the second drilling mechanism and the fourth drilling mechanism complete the drilling at the same time. At this time, when processing the third through hole and the fourth through hole, the buffer cylinder is put on the head of the tapping mechanism. At this time, the chamfered end is chamfered to the end of the buffer cylinder that needs to be tapped. At the same time, the axial position of the next tapping step is confirmed and pre-processed. (5) The base plate moves forward again, and the tapping end of the working end 16 moves forward into the buffer cylinder and completes the tapping. (6) Finally, the base plate moves backward to reset, and at the same time the two clamping cylinders are released, and the clamping cylinder moves downward to pick up the material.

[0011] With the above structure, this invention has the following advantages: 1. The feeding device (clamping cylinder + robot arm) automatically moves the arranged cylinders one by one to the processing station, significantly reducing manual intervention and improving production efficiency. The clamping device automatically fixes the workpiece. The axial pushing mechanism automatically completes the axial positioning of the workpiece. The entire process (feeding, positioning, multi-hole drilling, tapping) achieves continuous automated operation. 2. Four independent drilling stations (first to fourth drilling mechanisms) are set up, each responsible for processing different through holes. This design allows different drilling operations to be performed simultaneously or sequentially at different stations, greatly shortening the total time for a single workpiece to complete all drilling processes. 3. The tapping mechanism is cleverly integrated into the drilling process. Especially when processing the third and fourth through holes, the workpiece is fitted onto the tapping head for coaxial confirmation. The need to transfer the workpiece to another special machine for tapping is reduced, reducing turnaround time and equipment investment. 4. The axial pushing mechanism ensures that each workpiece is accurately pushed to abut against the axial positioning device, achieving reliable axial positioning and ensuring the consistency of hole depth and axial position. The clamping device moves laterally along the X-axis, enabling precise positioning of the workpiece between different drilling stations and ensuring the relative positional accuracy of each hole. 5. The core advantage of the patented equipment lies in its automated feeding, multi-station parallel drilling, integrated tapping process, and precise positioning system. This achieves high efficiency, high precision, and low manual labor dependence in the drilling and tapping of the buffer cylinder, significantly improving production efficiency, with daily production reaching over 800 pieces. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the buffer cylinder of the present invention.

[0013] Figure 2 This is a schematic diagram of the shock absorber cylinder drilling and tapping machine of the present invention.

[0014] Figure 3 This is a schematic diagram of the feeding device of the present invention.

[0015] Figure 4 This is a schematic diagram of the frame of the present invention.

[0016] Figure 5 This is a schematic diagram of the clamping device of the present invention.

[0017] Figure 6 This is a schematic diagram of the drilling device of the present invention.

[0018] Figure 7 This is a schematic diagram of the tapping mechanism of the present invention.

[0019] The following components are shown in the diagram: 1. Workbench; 2. Frame; 3. Feeding device; 4. Clamping device; 5. Axial pushing mechanism; 6. Drilling device; 7. Tapping mechanism; 8. Receiving cavity; 9. Base plate; 10. Clamping cylinder; 11. First drilling mechanism; 12. Second drilling mechanism; 13. Third drilling mechanism; 14. Fourth drilling mechanism; 15. Drive motor; 16. Working end; 17. Working head; 18. Pushing cylinder; 19. Clamping cylinder; 20. Cylinder; 21. Push rod. Detailed Implementation

[0020] The invention will now be further described with reference to the accompanying drawings.

[0021] like Figure 1 As shown, the buffer cylinder to be processed in this invention is a tube with a first through hole 101, a second through hole 102, a third through hole 103 and a fourth through hole 104 on the side wall of the tube. The center hole on the tube is provided with internal threads that need to be processed.

[0022] like Figure 2-7 As shown, the buffer cylinder drilling and tapping machine of the present invention includes a frame 2 with a worktable 1, characterized in that it further includes a feeding device 3, a clamping device 4, an axial pushing mechanism 5, a drilling device 6, and a tapping mechanism 7.

[0023] like Figure 3 and 4As shown, the feeding device 3 is used to move the sequentially arranged buffer cylinders one by one to the processing station using a clamping cylinder and a robotic arm. The feeding device includes a receiving cavity 8 for several buffer cylinders arranged horizontally from bottom to top. A clamping cylinder 19 is provided at the top of the feeding device. The clamping cylinder 19 grips the top buffer cylinder downwards and then returns it to its original position upwards. An upward-pushing cylinder is provided at the bottom of the receiving cavity 8. The buffer cylinders to be processed are fed in from the bottom side of the receiving cavity 8 and then pushed upwards one by one. The clamping cylinder grips the top buffer cylinder downwards and moves it upwards along the Y-axis to the top of the clamping device. Finally, it is placed downwards onto the surface of the arc-shaped groove of the clamping device to achieve Y-direction limiting. The position of the receiving cavity and the position of the arc-shaped groove of the clamping device are on the same X-coordinate. The clamping cylinder only needs to pick up and put down materials along the Z-axis and move along the Y-axis.

[0024] like Figure 4 and 5 As shown, the clamping device 4 is used to fix the buffer cylinder body that moves from the feeding device and moves laterally along the X-axis of the worktable. The clamping device 4 in this embodiment includes a base plate 9 with an arc groove. There are two clamping cylinders 10 on the top of the base plate 9. After the buffer cylinder body is placed on the base plate 9 with the arc groove, the axial pushing mechanism 5 at the tail pushes forward, and the buffer cylinder body on the clamping device is axially pushed forward to abut against the axial positioning device and axially positioned. Then the two clamping cylinders 10 press down to clamp the buffer cylinder body.

[0025] like Figure 6 As shown, the drilling device 6 includes a first drilling mechanism 11 at a first station, a second drilling mechanism 12 at a second station, a third drilling mechanism 13 at a third station, and a fourth drilling mechanism 14 at a fourth station. The first drilling mechanism 11 is used to process a first through hole 101, and the second drilling mechanism 12 is used to process a second through hole 102. Both the first and second drilling mechanisms 11 and 12 drill downwards. The third drilling mechanism 13 is used to process a third through hole 103, and the fourth drilling mechanism 14 is used to process a fourth through hole 104. Both the third drilling mechanism 13 and the fourth through hole 104 drill along the Y-axis. The first and third drilling mechanisms of the drilling device drill along the Z-axis, and the second and fourth drilling mechanisms drill along the Y-axis.

[0026] The clamping device has three working stations on the worktable: a first station for clamping the product, a second station for machining the first and third through holes, a third station for machining the second and fourth through holes, and a fourth station for machining the internal thread. During machining, the clamping device moves sequentially to the first, second, third, and fourth stations, and returns to the first station after machining at the fourth station.

[0027] like Figure 7As shown, the tapping mechanism 7 is used to machine the internal thread of the center hole in the head of the buffer cylinder. Simultaneously, when machining the third and fourth through holes, the buffer cylinder is fitted onto the head of the tapping mechanism to ensure that the buffer cylinder and the head of the tapping mechanism are coaxial. The tapping mechanism includes a drive motor 15, a working end 16, and a working head 17. The output shaft of the drive motor 15 passes through the working head and connects to the working end. The output shaft of the drive motor 15 is located within the elongated groove of the working head 17 and is radially adjustable. A push cylinder 18 is provided inside the working head. The movable rod of the push cylinder 18 pushes the output shaft of the drive motor 15 to move within the elongated groove, and after movement, it achieves positioning. The working end 16 includes a chamfered end and a tapping end. When machining the third and fourth through holes, the buffer cylinder is fitted onto the head of the tapping mechanism. At this time, the chamfered end chamfers the end of the buffer cylinder that needs tapping, and simultaneously confirms and pre-machines the axial position for the next tapping step.

[0028] The axial pushing mechanism includes a cylinder 20 and a push rod 21. The push rod is located at the rear of the worktable. In the working chamber, the piston rod of the cylinder pushes the push rod forward, which pushes the buffer cylinder body to the axial positioning device.

[0029] After processing is completed, the clamping device is reset to the first station. The clamping device is released and at the same time the buffer cylinder is moved backward along the X-axis, away from the axial positioning device. Finally, it is taken up by the clamping cylinder and enters the next feeding clamping.

[0030] Work process: (1) The clamping cylinder 19 moves to the top of the accommodating cavity 8 and grabs the buffer cylinder body at the top of the accommodating cavity 8 downward. After clamping, it moves upward to the position. Then it moves along the Y axis to the top of the base plate 9. Then it places the buffer cylinder body downward and releases it. Finally, the clamping cylinder 19 moves upward and waits for the buffer cylinder body to be processed before taking out the material.

[0031] (2) The cylinder 20 pushes the push rod 21 to move the buffer cylinder forward to the positioning groove on the base plate, and then the two clamping cylinders 10 press down.

[0032] (3) The base plate 9 moves forward, and the first drilling mechanism 11 and the third drilling mechanism 13 complete the drilling simultaneously.

[0033] (4) The base plate 9 moves forward again, and the second drilling mechanism 12 and the fourth drilling mechanism 14 complete the drilling at the same time. At this time, when processing the third through hole and the fourth through hole, the buffer cylinder is put onto the head of the tapping mechanism. At this time, the chamfered end is chamfered to the end of the buffer cylinder that needs to be tapped, and the axial position of the next tapping step is confirmed and pre-processed.

[0034] (5) The base plate 9 moves forward again, and the tapping end of the working end 16 moves forward into the buffer cylinder and completes the tapping.

[0035] (6) Finally, the bottom plate 9 moves backward to reset, and at the same time, the two clamping cylinders 10 are released, and the clamping cylinder 19 moves downward to take out the material.

Claims

1. A drilling and tapping machine for a buffer cylinder, comprising a frame with a worktable, characterized in that: Also includes The feeding device is used to move the sequentially arranged buffer cylinders one by one to the processing station by a robotic arm using clamping cylinders. Clamping device for fixing the buffer cylinder that moves from the feeding device and moves laterally along the X-axis of the worktable; The axial pushing mechanism moves the buffer cylinder on the axial pushing clamping device forward to abut against the axial positioning device for axial positioning. The drilling apparatus includes a first drilling mechanism at a first station, a second drilling mechanism at a second station, a third drilling mechanism at a third station, and a fourth drilling mechanism at a fourth station. The first drilling mechanism is used to process a first through hole, the second drilling mechanism is used to process a second through hole, the third drilling mechanism is used to process a third through hole, and the fourth drilling mechanism is used to process a fourth through hole. The tapping mechanism is used to machine the internal thread of the center hole of the head of the buffer cylinder. At the same time, when machining the third and fourth through holes, the buffer cylinder is fitted onto the head of the tapping mechanism to ensure that the buffer cylinder and the head of the tapping mechanism are coaxial. The feeding device includes a receiving cavity for several buffer cylinders arranged horizontally from bottom to top. A clamping cylinder is provided at the top of the feeding device. The clamping cylinder grabs the top buffer cylinder downward and then resets it upward. It moves along the Y-axis to the top of the clamping device and finally places it downward onto the surface of the arc groove of the clamping device to achieve the Y-direction limit. The position of the receiving cavity and the position of the arc groove of the clamping device are on the same X coordinate. The clamping cylinder only needs to pick up and release material along the Z-axis and move along the Y-axis. The drilling device has a first drilling mechanism and a third drilling mechanism drilling along the Z-axis, and a second drilling mechanism and a fourth drilling mechanism drilling along the Y-axis. The clamping device has four working positions on the worktable: a first position for clamping the product, a second position for machining the first through hole and the third through hole, a third position for machining the second through hole and the fourth through hole, and a fourth position for machining the internal thread. During machining, the clamping device moves sequentially to the first position, the second position, the third position, and the fourth position, and returns to the first position after machining at the fourth position. The tapping mechanism includes a drive motor, a working end, and a working head. The output shaft of the drive motor passes through the working head and is connected to the working end. The output shaft of the drive motor is located in the long slot of the working head. A push cylinder is provided in the working head. The movable rod of the push cylinder pushes the output shaft of the drive motor to move in the long slot and achieves positioning after movement.

2. The buffer cylinder drilling and tapping machine according to claim 1, characterized in that: The axial pushing mechanism includes a cylinder and a push rod. The push rod is located at the tail of the worktable. During operation, the piston rod of the cylinder pushes the push rod, which in turn pushes the buffer cylinder forward to the axial positioning device.

3. The buffer cylinder drilling and tapping machine according to claim 1, characterized in that: After processing is completed, the clamping device is reset to the first station, the clamping device is released and at the same time the buffer cylinder is moved backward along the X-axis, away from the axial positioning device.

4. The processing method of the buffer cylinder drilling and tapping machine according to any one of claims 1-3, characterized in that: Includes the following steps: (1) The clamping cylinder moves to the top of the accommodating cavity and grabs the buffer cylinder body at the top of the accommodating cavity downward. After clamping, it moves upward to the position. Then it moves along the Y axis to the top of the base plate. Then it places the buffer cylinder body downward and releases it. Finally, the clamping cylinder moves upward and waits for the buffer cylinder body to be processed before taking out the material. (2) The cylinder pushes the push rod to move the buffer cylinder forward to the positioning groove on the base plate, and then the two clamping cylinders press down; (3) The base plate moves forward, and the first drilling mechanism and the third drilling mechanism complete the drilling simultaneously; (4) The base plate moves forward again, and the second drilling mechanism and the fourth drilling mechanism complete the drilling at the same time. At this time, when processing the third through hole and the fourth through hole, the buffer cylinder is put onto the head of the tapping mechanism. At this time, the chamfered end is chamfered on the end of the buffer cylinder that needs to be tapped, and the axial position of the next tapping step is confirmed and pre-processed. (5) The base plate moves forward again, and the tapping end of the working end moves forward into the buffer cylinder and completes the tapping. (6) Finally, the base plate moves backward to reset, and at the same time, the two clamping cylinders are released, and the clamping cylinder moves downward to pick up the material.

Images