Aluminum alloy pipe cutting machining equipment for bicycle frame

Abstract

The invention relates to the field of cutting equipment, and discloses bicycle frame aluminum alloy pipe cutting equipment which comprises a bottom frame, a movable table capable of being controlled to automatically move along the X axis and the Y axis is arranged on the bottom frame, and a cutting mechanism is arranged on the movable table. The cutting mechanism comprises a vertically-arranged double-handle milling cutter and a driving motor used for driving the double-handle milling cutter to rotate, and a clamping mechanism used for clamping and fixing a pipe and enabling the end of the pipe to face the double-handle milling cutter is arranged on the bottom frame. And the control system is used for controlling the movable table to move so as to enable the double-handle milling cutter to move according to a preset track. Due to the adoption of the double-handle milling cutter, pipes with different diameter specifications can be cut only by selecting a proper milling cutter track on a control system, the cutter does not need to be replaced, and the double-handle milling cutter is particularly suitable for machining frame pipes with a large batch and a small number.

Description

Technical Field

[0001] The invention relates to the field of cutting equipment, and more specifically to an aluminum alloy pipe cutting processing equipment for a bicycle frame. Background Art

[0002] Aluminum alloy pipes have the advantages of high strength, light weight, corrosion resistance, and good processability, and are widely used in the manufacture of bicycle frames. The structure of a bicycle frame is basically welded by a number of roughly longitudinal pipes and transverse pipes, wherein the ends of the transverse pipes need to be cut to form lap joints that can adapt to the pipe body of the longitudinal pipe, so that the ends of the transverse pipes can fit the pipe body of the longitudinal pipe for subsequent welding. The prior art often uses a slotting method when cutting the lap joints of pipes, that is, a slotting tool is added to the slotting machine, and the diameter of the slotting tool is the same as the diameter of the longitudinal pipe connection. The slotting tool is used to directly slot and remove the end of the transverse pipe to form a lap joint. Although this method has a faster processing speed, it is necessary to replace the corresponding slotting tool for pipes of different diameters, and the adaptability is poor, especially for frame processing with a large number of batches and a small number of quantities. It is even more difficult to adapt. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, the present invention provides an aluminum alloy pipe cutting and processing device for a bicycle frame which can be used for pipes of different diameters without changing the cutting tool.

[0004] The above technical objectives of the present invention are achieved through the following technical solutions:

[0005] A bicycle frame aluminum alloy pipe cutting and processing equipment comprises a base frame, the base frame is provided with a movable table which can be controlled to automatically move along the X-axis and the Y-axis, the movable table is provided with a cutting mechanism, the cutting mechanism comprises a vertically arranged double-shank milling cutter and a driving motor for driving the double-shank milling cutter to rotate, the base frame is provided with a clamping mechanism for clamping and fixing the pipe so that the end of the pipe faces the double-shank milling cutter, and also comprises a control system for controlling the movement of the movable table so that the double-shank milling cutter moves according to a preset trajectory.

[0006] Furthermore, the movable table is provided with a baffle member for blocking the end of the pipe when clamping the pipe, so that the distance between the end of the pipe and the double-shank milling cutter is maintained at a preset distance.

[0007] Furthermore, the baffle member includes two sub-baffles respectively arranged on both sides of the double-handled milling cutter, and the distance between each sub-baffle and the double-handled milling cutter in the X-axis direction is greater than the diameter of the pipe; when working, one of the sub-baffles is aligned with the clamping position of the clamping mechanism, and after the double-handled milling cutter completes a preset trajectory, the other sub-baffle is aligned with the clamping position of the clamping mechanism.

[0008] Furthermore, the cutting mechanism includes a mounting frame, a spindle box, a bearing member, and a three-jaw chuck. The mounting frame is fixedly connected to the movable table, the spindle box and the drive motor are both fixedly connected to the mounting frame, the output end of the drive motor is connected to the input end of the spindle box, the three-jaw chuck is fixedly connected to the output end of the spindle box, the outer ring of the bearing member is fixedly connected to the movable table and is directly opposite to the three-jaw chuck up and down, the upper shank of the double-shank milling cutter is detachably fixedly connected to the three-jaw chuck, and the lower shank is inserted into the inner ring of the bearing member.

[0009] Furthermore, the cutting mechanism also includes a dustproof component covering the bearing component and used to prevent chips from entering the lower bearing component.

[0010] Furthermore, the dustproof assembly includes a dust cover, a rubber sleeve and a plurality of limit plates. The dust cover covers the bearing member and is provided with a through hole on the top for the double-shank milling cutter to pass through. The rubber sleeve is tightly mounted on the shank of the double-shank milling cutter and the outer surface is tightly fitted to the inner side of the through hole. The plurality of limit plates are detachably fixedly connected to the movable table and are used to limit the dust cover so that the bottom surface of the dust cover is close to the table surface of the movable table.

[0011] Furthermore, the dustproof assembly includes a dust cover, a mounting tube, an impeller and a plurality of limit plates. The dust cover is covered on the bearing component and a through hole is provided on the top for a double-handled milling cutter to pass through. There is a gap between the through hole and the double-handled milling cutter. The mounting tube is tightly fitted and inserted into the inner ring of the bearing component. The lower handle of the double-handled milling cutter is tightly fitted and inserted into the mounting tube. The impeller is tightly sleeved and fixedly connected to the upper part of the mounting tube. The plurality of limit plates are detachably and fixedly connected to the movable platform for fixing the dust cover on the table surface of the movable platform. The movable platform is provided with a plurality of air inlet holes at the position of the dust cover.

[0012] Furthermore, the drive motor is a dual-axis drive motor, and two output ends of the dual-axis drive motor are respectively connected to the input end of the spindle box and the lower part of the mounting cylinder through pulleys, so that the spindle box and the mounting cylinder rotate synchronously.

[0013] Furthermore, the clamping mechanism includes a clamping head for clamping the pipe, a movable tube and a fixed tube, the fixed tube is fixedly connected to the base frame, the movable tube can move up and down and can be locked and inserted into the fixed tube, and the clamping head can rotate in a vertical plane and can be locked and connected to the upper part of the movable tube.

[0014] Furthermore, the clamping head includes an upper clamping plate, a lower clamping plate and a hand screw, the bottom of the lower clamping plate can be rotated in a vertical plane and can be locked to the upper part of the movable tube, the upper clamping plate can be rotated along a horizontal axis and connected to the lower clamping plate, and the hand screw passes through the upper clamping plate and is threadedly connected to the lower clamping plate.

[0015] In summary, the present invention has the beneficial effects that when the present invention is used, the pipe is clamped and fixed by the clamping mechanism, and the control system controls the movable table to move on the X-axis and the Y-axis, so that the double-shank milling cutter of the cutting mechanism on it moves according to the preset trajectory, so as to cut the end of the pipe. Due to the use of the double-shank milling cutter, for pipes of different diameters, only the appropriate milling cutter trajectory can be selected on the control system to cut, and there is no need to change the tool, which is particularly suitable for the processing of frame pipes with large batches and small quantities. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of a first embodiment of the present invention;

[0017] Figure 2 is a cross-sectional schematic diagram of a dustproof component of a first embodiment of the present invention;

[0018] Figure 3 It is a schematic diagram of the movement trajectory of the cutting device of the present invention during processing;

[0019] Figure 4 is a schematic structural diagram of a second embodiment of the present invention;

[0020] Figure 5 2 is a schematic cross-sectional view of a dustproof component according to a second embodiment of the present invention.

[0021] Figure numerals: 1. base frame; 2. movable table; 21. air inlet; 3. cutting mechanism; 31. mounting frame; 33. double-shank milling cutter; 34. spindle box; 35. bearing member; 36. three-jaw chuck; 37. dustproof assembly; 371. dust cover; 372. rubber sleeve; 373. limit plate; 374. mounting cylinder; 375. impeller; 4. clamping mechanism; 41. movable tube; 42. fixed tube; 43. upper clamping plate; 44. lower clamping plate; 5. sub-baffle; 6. pipe. DETAILED DESCRIPTION

[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0023] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or indirectly on the other component. When a component is referred to as being "connected to" another component, it can be directly or indirectly connected to the other component.

[0024] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0026] Reference Figures 1 to 5 The aluminum alloy pipe cutting and processing equipment for bicycle frames mainly includes a base frame 1, on which is provided a movable table 2 which can be controlled and automatically moved along the X-axis and the Y-axis, on which is provided a cutting mechanism 3, and the cutting mechanism 3 includes a vertically arranged double-handled milling cutter 33 and a driving motor 32 for driving the double-handled milling cutter 33 to rotate, on which is provided a clamping mechanism 4 for clamping and fixing a pipe 42 so that the end of the pipe 6 faces the double-handled milling cutter 33, and also includes a control system for controlling the movement of the movable table 2 so that the double-handled milling cutter 33 moves according to a preset trajectory 10.

[0027] The preset trajectory 10 of the double-shank milling cutter 33 is determined according to the diameter specification of the pipe 6 to be cut and the shape of the lap joint. The data of the trajectory is pre-entered into the control system and can be directly selected and called when needed. In addition, since the diameter of the pipe 6 is generally relatively large, if a common single-shank milling cutter is used, the torque during cutting can easily cause the milling cutter to break. Therefore, the double-shank milling cutter 33 is used in this embodiment to enhance the tool's anti-breakage ability. The double-shank milling cutter 33 can use the milling cutter disclosed in the Chinese patent document entitled "A Tungsten Steel Double-Head Milling Cutter" with the authorization announcement number CN216828833U. The movable table 2 can be moved in the X-axis and Y-axis through guide rails in the X-axis and Y-axis directions. It also has a driving member for the X-axis and Y-axis. Through the control system, the driving member drives the movable table 2 to move along the X-axis and Y-axis, so that the double-shank milling cutter 33 moves according to the preset trajectory 10. The control system is not drawn in the figure, and the control system of the section to be controlled of the existing machine tool can be used.

[0028] The movable table 2 is provided with a baffle member for blocking the end of the pipe when clamping the pipe 6 and keeping the distance between the end of the pipe and the double-handled milling cutter 33 at a preset distance. The baffle member plays a positioning role so that each time the pipe 6 is clamped, the end can be in a suitable processing position.

[0029] Preferably, Figure 3 As shown, the baffle member includes two sub-baffles 5, which are respectively arranged on both sides of the double-handled milling cutter 33, and the distance between each sub-baffle 5 and the double-handled milling cutter 33 in the X-axis direction is greater than the diameter of the pipe 6, so that the pipe 6 can be inserted between the sub-baffle 5 and the double-handled milling cutter 33, so that the double-handled milling cutter 33 can smoothly perform the cutting operation. At the beginning of the processing operation, one of the sub-baffles 5 is aligned with the clamping position of the clamping mechanism 4, and the pipe can be clamped at this time. The double-handled milling cutter 33 moves along the preset trajectory 10 to cut the pipe 6, and stops after completion. At this time, the other sub-baffle 5 is aligned with the clamping position of the clamping mechanism 4. After replacing the new pipe 6 to be cut, the double-handled milling cutter 33 resets and moves along the preset trajectory 10 to complete the new cutting operation. The cutting of two pipes can be completed in one round trip, thereby improving the cutting efficiency.

[0030] The cutting mechanism 3 includes a mounting frame 31, a spindle box 34, a bearing member 35, and a three-jaw chuck 36. The mounting frame 31 is fixedly connected to the movable table 2. The spindle box 34 and the drive motor 32 are both fixedly connected to the mounting frame 31. The output end of the drive motor 32 is connected to the input end of the spindle box 34. The three-jaw chuck 36 is fixedly connected to the output end of the spindle box 34. The outer ring of the bearing member 35 is fixedly connected to the movable table 2 and is directly opposite to the three-jaw chuck 36. The upper handle of the double-shank milling cutter 33 is detachably fixedly connected to the three-jaw chuck 36, and the lower handle cooperates to insert the inner ring of the bearing member 35. In addition, the cutting mechanism 3 also includes a dustproof component 37 covering the bearing member 35 for preventing chips from entering the lower bearing member 35.

[0031] The first embodiment, referring to Figure 1 and Figure 2 The driving motor 32 of the cutting mechanism 3 adopts a single-axis driving motor 32, and the output end of the single-axis driving motor 32 is connected to the spindle box 34 through a pulley, and the double-shank milling cutter 33 is driven to rotate by driving the spindle box 34. In this embodiment, the dustproof component 37 includes a dust cover 371, a rubber sleeve 372 and a plurality of limit plates 373. The dust cover 371 covers the bearing member 35 and is provided with a through hole on the top for the double-shank milling cutter 33 to pass through. The rubber sleeve 372 is tightly sleeved on the shank of the double-shank milling cutter 33 and the outer surface is tightly attached to the inner side of the through hole. The plurality of limit plates 373 are detachably fixedly connected to the movable table 2, and are used to limit the dust cover 371 so that the bottom surface of the dust cover 371 is close to the table surface of the movable table 2.

[0032] The above-mentioned embodiment uses two or three limit plates 373, which are evenly arranged around the dust cover 371. The limit plates 373 do not fix the dust cover 371, but only prevent it from moving upward toward the axis of the double-shank milling cutter 33. Since the rubber sleeve 372 is in close contact with the handle of the double-shank milling cutter 33 and the through hole of the dust cover 371, it can be ensured that the chips will not directly enter the dust cover 371 from the handle and the through hole. At the same time, due to the friction of the rubber sleeve 372, the dust cover 371 will rotate with the rotation of the double-shank milling cutter 33. During operation, the chips that fall on the dust cover 371 and the movable table 2 near the dust cover 371 can be thrown away or blown away by the centrifugal effect generated when the dust cover 371 rotates and the airflow generated around it, thereby ensuring a good dustproof effect.

[0033] The second embodiment, referring to Figure 4 and Figure 5 The dustproof assembly 37 of the cutting mechanism 3 includes a dust cover 371, a mounting cylinder 374, an impeller 375 and a plurality of limit plates 373. The dust cover 371 covers the bearing member 35 and is provided with a through hole on the top for the double-shank milling cutter 33 to pass through. There is a gap between the through hole and the double-shank milling cutter 33. The mounting cylinder 374 is tightly fitted and inserted into the inner ring of the bearing member 35. The lower handle of the double-shank milling cutter 33 is tightly fitted and inserted into the mounting cylinder 374. The impeller 375 is tightly sleeved and fixedly connected to the upper part of the mounting cylinder 374. The movable platform 2 is provided with a plurality of air inlet holes 21 at the position where the dust cover 371 covers. The plurality of limit plates 373 are detachably fixedly connected to the movable platform 2. Two or three limit plates 373 can be used, which are evenly arranged around the dust cover 371 to press and fix the dust cover 371 on the surface of the movable platform 2.

[0034] In the second embodiment described above, the resistance is increased due to the addition of the mounting barrel 374 and the impeller 375. If only the single-axis drive motor 32 of the first embodiment is used, the double-shank milling cutter 33 may be damaged due to the large torque. Therefore, the drive motor 32 of this embodiment is a double-axis drive motor 32, and the two output ends of the double-axis drive motor 32 are respectively connected to the input end of the spindle box 34 and the lower part of the mounting barrel 374 through pulleys, so that the spindle box 34 and the mounting barrel 374 rotate synchronously. During operation, the rotation of the mounting barrel 374 will drive the impeller 375 to rotate, so that the airflow enters the dust cover 371 from the air inlet 21 of the movable table 2, and then flows out from the gap between the through hole at the top of the dust cover 371 and the double-shank milling cutter 33, and the chips falling into the gap are blown away by the airflow to prevent them from entering the dust cover 371. At the same time, the airflow in the gap can also dissipate heat and cool the double-shank milling cutter 33. The dust cover 371 of this embodiment is in a fixed state and will not generate sliding friction with other components, thereby avoiding wear and tear and increasing the service life.

[0035] The clamping mechanism 4 of each of the above embodiments includes a clamping head for clamping the pipe 6, a movable pipe 41 and a fixed pipe 42, the fixed pipe 42 is fixedly connected to the base frame 1, the movable pipe 41 can move up and down and can be locked and inserted into the fixed pipe 42, and the clamping head can rotate in a vertical plane and can be locked and connected to the upper part of the movable pipe 41. Some pipes on the bicycle frame are not absolutely arranged horizontally, so the clamping head is set as a rotatable structure, which can be fixed at a suitable angle after clamping to achieve the required processing angle. In addition, the clamping head includes an upper clamping plate 43, a lower clamping plate 44 and a hand screw, the bottom of the lower clamping plate 44 can rotate in a vertical plane and can be locked and connected to the upper part of the movable pipe 41, the upper clamping plate 43 can be rotated along a horizontal axis and connected to the lower clamping plate 44, and the hand screw passes through the upper clamping plate 43 and is threadedly connected to the lower clamping plate 44. In addition, the up and down movement adjustment of the movable tube 41 and the rotation angle adjustment of the clamping head are both locked and loosened by hand screws, ensuring convenience of use.

[0036] The above embodiments are merely explanations of the present invention and are not limitations of the present invention. After reading this specification, those skilled in the art may make modifications to the embodiments without any creative contribution as needed. However, such modifications are protected by the patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A bicycle frame aluminum alloy tube cutting and processing equipment, including a chassis, characterized in that: The base frame is provided with a movable table which can be controlled to automatically move along the X-axis and the Y-axis, and the movable table is provided with a cutting mechanism, and the cutting mechanism includes a vertically arranged double-handled milling cutter and a driving motor for driving the double-handled milling cutter to rotate. The base frame is provided with a clamping mechanism for clamping and fixing the pipe so that the end of the pipe faces the double-handled milling cutter, and also includes a control system for controlling the movement of the movable table so that the double-handled milling cutter moves according to a preset trajectory.

2. The aluminum alloy pipe cutting and processing equipment for a bicycle frame according to claim 1, characterized in that: The movable platform is provided with a baffle member for blocking the end of the pipe when clamping the pipe, so that the distance between the end of the pipe and the double-shank milling cutter is maintained at a preset distance.

3. The aluminum alloy pipe cutting and processing equipment for bicycle frames according to claim 2 is characterized in that: The baffle member includes two sub-baffles respectively arranged on both sides of the double-handled milling cutter, and the distance between each sub-baffle and the double-handled milling cutter in the X-axis direction is greater than the diameter of the pipe; when working, one of the sub-baffles is aligned with the clamping position of the clamping mechanism, and after the double-handled milling cutter completes a preset trajectory, the other sub-baffle is aligned with the clamping position of the clamping mechanism.

4. The aluminum alloy pipe cutting and processing equipment for bicycle frames according to claim 1, characterized in that: The cutting mechanism includes a mounting frame, a spindle box, a bearing component, and a three-jaw chuck. The mounting frame is fixedly connected to the movable table. The spindle box and the drive motor are both fixedly connected to the mounting frame. The output end of the drive motor is connected to the input end of the spindle box. The three-jaw chuck is fixedly connected to the output end of the spindle box. The outer ring of the bearing component is fixedly connected to the movable table and is directly opposite to the three-jaw chuck up and down. The upper shank of the double-shank milling cutter is detachably fixedly connected to the three-jaw chuck, and the lower shank is inserted into the inner ring of the bearing component.

5. The aluminum alloy pipe cutting and processing equipment for bicycle frames according to claim 4, characterized in that: The cutting mechanism also includes a dust-proof component covering the bearing component and used for preventing chips from entering the lower bearing component.

6. The aluminum alloy pipe cutting and processing equipment for bicycle frames according to claim 5, characterized in that: The dustproof assembly includes a dust cover, a rubber sleeve and a plurality of limit plates. The dust cover covers the bearing component and is provided with a through hole on the top for the double-shank milling cutter to pass through. The rubber sleeve is tightly mounted on the shank of the double-shank milling cutter and the outer surface is tightly fitted to the inner side of the through hole. The plurality of limit plates are detachably fixedly connected to the movable table and are used to limit the dust cover so that the bottom surface of the dust cover is close to the table surface of the movable table.

7. The aluminum alloy pipe cutting and processing equipment for bicycle frames according to claim 5, characterized in that: The dustproof assembly includes a dust cover, a mounting tube, an impeller and a plurality of limit plates. The dust cover is covered on the bearing component and a through hole is provided on the top for a double-handled milling cutter to pass through. There is a gap between the through hole and the double-handled milling cutter. The mounting tube is tightly fitted and inserted into the inner ring of the bearing component. The lower handle of the double-handled milling cutter is tightly fitted and inserted into the mounting tube. The impeller is tightly sleeved and fixedly connected to the upper part of the mounting tube. The plurality of limit plates are detachably and fixedly connected to the movable platform for fixing the dust cover on the surface of the movable platform. The movable platform is provided with a plurality of air inlet holes at the position of the dust cover.

8. The aluminum alloy pipe cutting and processing equipment for bicycle frames according to claim 7, characterized in that: The drive motor is a dual-axis drive motor, and the two output ends of the dual-axis drive motor are respectively connected to the input end of the spindle box and the lower part of the mounting cylinder through pulleys, so that the spindle box and the mounting cylinder rotate synchronously.

9. The aluminum alloy pipe cutting and processing equipment for bicycle frames according to any one of claims 1 to 8, characterized in that: The clamping mechanism includes a clamping head for clamping pipes, a movable pipe and a fixed pipe, wherein the fixed pipe is fixedly connected to the base frame, the movable pipe can be moved up and down and can be locked and inserted into the fixed pipe, and the clamping head can be rotated in a vertical plane and can be locked and connected to the upper part of the movable pipe.

10. The aluminum alloy pipe cutting and processing equipment for bicycle frames according to claim 9, characterized in that: The clamping head includes an upper clamping plate, a lower clamping plate and a hand screw. The bottom of the lower clamping plate can be rotated in a vertical plane and can be locked to the upper part of the movable tube. The upper clamping plate can be rotated along a horizontal axis and connected to the lower clamping plate. The hand screw passes through the upper clamping plate and is threadedly connected to the lower clamping plate.

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